diff --git a/Jiguang.JPush/DeviceClient.cs b/Jiguang.JPush/DeviceClient.cs
index 298ebab..8c50dbb 100644
--- a/Jiguang.JPush/DeviceClient.cs
+++ b/Jiguang.JPush/DeviceClient.cs
@@ -11,7 +11,13 @@ namespace Jiguang.JPush
 {
     public class DeviceClient
     {
+        public DeviceClient(HttpClient client)
+        {
+            _client = client;
+        }
+
         private const string BASE_URL = "https://device.jpush.cn";
+        private HttpClient _client;
 
         /// <summary>
         /// <see cref="GetDeviceInfo(string)"/>
@@ -22,7 +28,7 @@ public async Task<HttpResponse> GetDeviceInfoAsync(string registrationId)
                 throw new ArgumentNullException(registrationId);
 
             var url = BASE_URL + "/v3/devices/" + registrationId;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -51,7 +57,7 @@ public async Task<HttpResponse> UpdateDeviceInfoAsync(string registrationId, str
 
             var url = BASE_URL + "/v3/devices/" + registrationId;
             HttpContent requestContent = new StringContent(json, Encoding.UTF8);
-            HttpResponseMessage msg = await JPushClient.HttpClient.PostAsync(url, requestContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(url, requestContent).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -99,7 +105,7 @@ public async Task<HttpResponse> GetDevicesByAliasAsync(string alias, string plat
             if (!string.IsNullOrEmpty(platform))
                 url += "?platform=" + platform;
 
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             string responseConetent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseConetent);
         }
@@ -130,7 +136,7 @@ public async Task<HttpResponse> DeleteAliasAsync(string alias, string platform)
             if (!string.IsNullOrEmpty(platform))
                 url += "?platform=" + platform;
 
-            HttpResponseMessage msg = await JPushClient.HttpClient.DeleteAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.DeleteAsync(url).ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, "");
         }
 
@@ -153,7 +159,7 @@ public HttpResponse DeleteAlias(string alias, string platform)
         public async Task<HttpResponse> GetTagsAsync()
         {
             var url = BASE_URL + "/v3/tags/";
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -181,7 +187,7 @@ public async Task<HttpResponse> IsDeviceInTagAsync(string registrationId, string
                 throw new ArgumentNullException(nameof(tag));
 
             var url = BASE_URL + "/v3/tags/" + tag + "/registration_ids/" + registrationId;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -221,7 +227,7 @@ public async Task<HttpResponse> AddDevicesToTagAsync(string tag, List<string> re
             };
 
             var requestContent = new StringContent(jObj.ToString(), Encoding.UTF8);
-            HttpResponseMessage msg = await JPushClient.HttpClient.PostAsync(url, requestContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(url, requestContent).ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, "");
         }
 
@@ -260,7 +266,7 @@ public async Task<HttpResponse> RemoveDevicesFromTagAsync(string tag, List<strin
             };
 
             var requestContent = new StringContent(jObj.ToString(), Encoding.UTF8);
-            HttpResponseMessage msg = await JPushClient.HttpClient.PostAsync(url, requestContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(url, requestContent).ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, "");
         }
 
@@ -290,7 +296,7 @@ public async Task<HttpResponse> DeleteTagAsync(string tag, string platform)
             if (!string.IsNullOrEmpty(platform))
                 url += "?platform=" + platform;
 
-            HttpResponseMessage msg = await JPushClient.HttpClient.DeleteAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.DeleteAsync(url).ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, "");
         }
 
@@ -324,7 +330,7 @@ public async Task<HttpResponse> GetUserOnlineStatusAsync(List<string> registrati
 
             var requestContent = new StringContent(jObj.ToString(), Encoding.UTF8);
 
-            HttpResponseMessage msg = await JPushClient.HttpClient.PostAsync(url, requestContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(url, requestContent).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
diff --git a/Jiguang.JPush/JPushClient.cs b/Jiguang.JPush/JPushClient.cs
index 0972ab3..d1176e5 100644
--- a/Jiguang.JPush/JPushClient.cs
+++ b/Jiguang.JPush/JPushClient.cs
@@ -23,13 +23,7 @@ public class JPushClient
 
         public ReportClient Report { get => report; set => report = value; }
 
-        public static HttpClient HttpClient;
-
-        static JPushClient()
-        {
-            HttpClient = new HttpClient();
-            HttpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
-        }
+        public HttpClient _client;
 
         public JPushClient(string appKey, string masterSecret)
         {
@@ -39,12 +33,14 @@ public JPushClient(string appKey, string masterSecret)
             if (string.IsNullOrEmpty(masterSecret))
                 throw new ArgumentNullException(nameof(masterSecret));
 
+            _client = new HttpClient();
+            _client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
             var auth = Convert.ToBase64String(Encoding.UTF8.GetBytes(appKey + ":" + masterSecret));
-            HttpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", auth);
+            _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", auth);
 
-            Report = new ReportClient();
-            Device = new DeviceClient();
-            Schedule = new ScheduleClient();
+            Report = new ReportClient(_client);
+            Device = new DeviceClient(_client);
+            Schedule = new ScheduleClient(_client);
         }
 
         /// <summary>
@@ -68,7 +64,7 @@ public async Task<HttpResponse> SendPushAsync(string jsonBody)
                 throw new ArgumentNullException(nameof(jsonBody));
 
             HttpContent httpContent = new StringContent(jsonBody, Encoding.UTF8);
-            HttpResponseMessage msg = await HttpClient.PostAsync(BASE_URL, httpContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(BASE_URL, httpContent).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -104,7 +100,7 @@ public async Task<HttpResponse> IsPushValidAsync(string jsonBody)
 
             HttpContent httpContent = new StringContent(jsonBody, Encoding.UTF8);
             var url = BASE_URL + "/validate";
-            HttpResponseMessage msg = await HttpClient.PostAsync(url, httpContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(url, httpContent).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -150,7 +146,7 @@ public async Task<HttpResponse> GetCIdListAsync(int? count, string type)
                     url += ("&type=" + type);
             }
 
-            HttpResponseMessage msg = await HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -230,7 +226,7 @@ private async Task<HttpResponse> BatchPushAsync(String url, List<SinglePayload>
                 batchPushPayload.Pushlist.Add((String) jArray[i], singlePayLoadList[i]);
             }
             HttpContent httpContent = new StringContent(batchPushPayload.ToString(), Encoding.UTF8);
-            HttpResponseMessage msg = await HttpClient.PostAsync(url, httpContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(url, httpContent).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
diff --git a/Jiguang.JPush/ReportClient.cs b/Jiguang.JPush/ReportClient.cs
index d72b1ae..00b97c3 100644
--- a/Jiguang.JPush/ReportClient.cs
+++ b/Jiguang.JPush/ReportClient.cs
@@ -14,6 +14,12 @@ public class ReportClient
         public const string BASE_URL_REPORT_BEIJING = "https://bjapi.push.jiguang.cn/v3/report";
 
         private string BASE_URL = BASE_URL_REPORT_DEFAULT;
+        private HttpClient _client;
+
+        public ReportClient(HttpClient client)
+        {
+            _client = client;
+        }
 
         /// <summary>
         /// 设置 Report API 的调用地址。
@@ -35,7 +41,7 @@ public async Task<HttpResponse> GetMessageReportAsync(List<string> msgIdList)
 
             var msgIds = string.Join(",", msgIdList);
             var url = BASE_URL + "/received?msg_ids=" + msgIds;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -61,7 +67,7 @@ public async Task<HttpResponse> GetReceivedDetailReportAsync(List<string> msgIdL
 
             var msgIds = string.Join(",", msgIdList);
             var url = BASE_URL + "/received/detail?msg_ids=" + msgIds;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -101,7 +107,7 @@ public async Task<HttpResponse> GetMessageSendStatusAsync(string msgId, List<str
             var url = BASE_URL + "/status/message";
             var httpContent = new StringContent(body.ToString(), Encoding.UTF8);
 
-            HttpResponseMessage msg = await JPushClient.HttpClient.PostAsync(url, httpContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(url, httpContent).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -130,7 +136,7 @@ public async Task<HttpResponse> GetMessageDetailReportAsync(List<string> msgIdLi
 
             var msgIds = string.Join(",", msgIdList);
             var url = BASE_URL + "/messages?msg_ids=" + msgIds;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -157,7 +163,7 @@ public async Task<HttpResponse> GetMessagesDetailReportAsync(List<string> msgIdL
 
             var msgIds = string.Join(",", msgIdList);
             var url = BASE_URL + "/messages/detail?msg_ids=" + msgIds;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
@@ -189,7 +195,7 @@ public async Task<HttpResponse> GetUserReportAsync(string timeUnit, string start
                 throw new ArgumentOutOfRangeException(nameof(duration));
 
             var url = BASE_URL + "/users?time_unit=" + timeUnit + "&start=" + startTime + "&duration=" + duration;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             var content = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, content);
         }
diff --git a/Jiguang.JPush/ScheduleClient.cs b/Jiguang.JPush/ScheduleClient.cs
index c0e366d..420c1d6 100644
--- a/Jiguang.JPush/ScheduleClient.cs
+++ b/Jiguang.JPush/ScheduleClient.cs
@@ -15,11 +15,18 @@ public class ScheduleClient
 
         private string BASE_URL = BASE_URL_SCHEDULE_DEFAULT;
 
+        private HttpClient _client;
+        
         private JsonSerializer jsonSerializer = new JsonSerializer
         {
             NullValueHandling = NullValueHandling.Ignore
         };
 
+        public ScheduleClient(HttpClient httpClient)
+        {
+            _client = httpClient;
+        }
+
         /// <summary>
         /// 设置 Schedule API 的调用地址。
         /// </summary>
@@ -42,7 +49,7 @@ public async Task<HttpResponse> CreateScheduleTaskAsync(string json)
                 throw new ArgumentNullException(nameof(json));
 
             HttpContent requestContent = new StringContent(json, Encoding.UTF8);
-            HttpResponseMessage msg = await JPushClient.HttpClient.PostAsync(BASE_URL, requestContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PostAsync(BASE_URL, requestContent).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -142,7 +149,7 @@ public async Task<HttpResponse> GetValidScheduleTasksAsync(int page = 1)
                 throw new ArgumentNullException(nameof(page));
 
             var url = BASE_URL + "?page=" + page;
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -172,7 +179,7 @@ public async Task<HttpResponse> GetScheduleTaskAsync(string scheduleId)
                 throw new ArgumentNullException(nameof(scheduleId));
 
             var url = BASE_URL + $"/{scheduleId}";
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -198,7 +205,7 @@ public async Task<HttpResponse> GetScheduleTaskMsgIdAsync(string scheduleId)
                 throw new ArgumentNullException(nameof(scheduleId));
 
             var url = BASE_URL + $"/{scheduleId}/msg_ids";
-            HttpResponseMessage msg = await JPushClient.HttpClient.GetAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.GetAsync(url).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -224,7 +231,7 @@ public async Task<HttpResponse> UpdateScheduleTaskAsync(string scheduleId, strin
 
             var url = BASE_URL + $"/{scheduleId}";
             HttpContent requestContent = new StringContent(json, Encoding.UTF8);
-            HttpResponseMessage msg = await JPushClient.HttpClient.PutAsync(url, requestContent).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.PutAsync(url, requestContent).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }
@@ -338,7 +345,7 @@ public async Task<HttpResponse> DeleteScheduleTaskAsync(string scheduleId)
                 throw new ArgumentNullException(nameof(scheduleId));
 
             var url = BASE_URL + $"/{scheduleId}";
-            HttpResponseMessage msg = await JPushClient.HttpClient.DeleteAsync(url).ConfigureAwait(false);
+            HttpResponseMessage msg = await _client.DeleteAsync(url).ConfigureAwait(false);
             string responseContent = await msg.Content.ReadAsStringAsync().ConfigureAwait(false);
             return new HttpResponse(msg.StatusCode, msg.Headers, responseContent);
         }