diff --git a/README.md b/README.md
index 420881c..37fe01b 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ allprojects {
 然后在需要使用的模块的build.gradle中添加以下代码
 ```groovy
 dependencies {
-    implementation 'com.github.Brook007:DependencyLayout:1.0.1'
+    implementation 'com.github.Brook007:DependencyLayout:1.0.3'
 }
 ```
 
diff --git a/library/src/main/java/com/brook/app/android/supportlibrary/util/Util.java b/library/src/main/java/com/brook/app/android/supportlibrary/util/Util.java
index 4d964e8..ccf2156 100644
--- a/library/src/main/java/com/brook/app/android/supportlibrary/util/Util.java
+++ b/library/src/main/java/com/brook/app/android/supportlibrary/util/Util.java
@@ -180,8 +180,8 @@ public static float dp2px(float dpVal) {
      * @param spVal
      * @return
      */
-    public static int sp2px(float spVal) {
+    public static float sp2px(float spVal) {
         final float fontScale = getContext().getResources().getDisplayMetrics().scaledDensity;
-        return (int) (spVal * fontScale + 0.5f);
+        return (spVal * fontScale + 0.5f);
     }
 }
diff --git a/library/src/main/java/com/brook/app/android/supportlibrary/view/DependencyLayout.java b/library/src/main/java/com/brook/app/android/supportlibrary/view/DependencyLayout.java
index e59aaa6..a9db13f 100644
--- a/library/src/main/java/com/brook/app/android/supportlibrary/view/DependencyLayout.java
+++ b/library/src/main/java/com/brook/app/android/supportlibrary/view/DependencyLayout.java
@@ -942,13 +942,16 @@ public LayoutParams(Context context, AttributeSet attrs) {
         private float calculationSystem(TypedArray typedArray, int attr, DisplayMetrics displayMetrics) {
             String text = Util.getText(typedArray, attr);
             String value = Util.getValue(text);
-            String unit = text.substring(value.length(), text.length()).toLowerCase();
-            if ("dip".equals(unit)) {
-                return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, Float.valueOf(value), displayMetrics);
+            String unit = text.substring(value.length()).toLowerCase();
+            if ("dip".equals(unit) || "dp".equals(unit)) {
+                return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, Util.toFloat(value), displayMetrics);
             } else if ("px".endsWith(unit)) {
-                return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX, Float.valueOf(value), displayMetrics);
+                return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX, Util.toFloat(value), displayMetrics);
+            } else if ("sp".endsWith(unit)) {
+                return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, Util.toFloat(value), displayMetrics);
+            } else {
+                return Util.toFloat(value);
             }
-            return Float.valueOf(value);
         }
 
         /**