diff --git a/packages/canyon-map/package.json b/packages/canyon-map/package.json
index 007ccd79..b497396e 100644
--- a/packages/canyon-map/package.json
+++ b/packages/canyon-map/package.json
@@ -1,6 +1,6 @@
 {
   "name": "canyon-map",
-  "version": "2.0.0-beta.2",
+  "version": "2.0.0-beta.3",
   "description": "",
   "type": "module",
   "exports": {
@@ -34,4 +34,4 @@
     "istanbul-lib-coverage": "^3.2.2",
     "istanbul-lib-source-maps": "^5.0.6"
   }
-}
\ No newline at end of file
+}
diff --git a/packages/canyon-map/src/coverage.ts b/packages/canyon-map/src/coverage.ts
index 4e20183e..2c48b55f 100644
--- a/packages/canyon-map/src/coverage.ts
+++ b/packages/canyon-map/src/coverage.ts
@@ -1,19 +1,25 @@
 import libCoverage from "istanbul-lib-coverage";
 import libSourceMaps from "istanbul-lib-source-maps";
 // 覆盖率回溯，在覆盖率存储之前转换
-export async function remapCoverage(obj: any) {
+export async function remapCoverage(obj:any) {
+  const oldKeys = Object.keys(obj);
   const res = await libSourceMaps
     .createSourceMapStore()
     .transformCoverage(libCoverage.createCoverageMap(obj));
   const { data: data_1 } = res;
-  const obj_1: any = {};
-  for (const dataKey in data_1) {
+  const obj_1 = {};
+  Object.entries(data_1).forEach(([key, value],index) => {
     // @ts-ignore
-    const x = data_1[dataKey]["data"];
-    obj_1[x.path] = x;
-  }
-  return obj_1;
+    const x = value["data"];
+    // @ts-ignore
+    obj_1[x.path] = {
+      ...x,
+      oldPath: oldKeys[index]
+    };
+  });
+  return obj_1
 }
+
 // 回溯未经过reMapCoverage的数据，但是必须得传入插装路径，因为这里的noReMap是没有插装路径的
 export const remapCoverageWithInstrumentCwd = async (noReMap:any, instrumentCwd:string) => {
   // 如果来自的插桩路径不同，要预处理！！！
@@ -33,9 +39,13 @@ export const remapCoverageWithInstrumentCwd = async (noReMap:any, instrumentCwd:
   const obj2: any = {};
   for (const coverageKey in reMapedCov) {
     const newKey = coverageKey.replace(instrumentCwd + "/", "");
+    // @ts-ignore
+    const oldPath = reMapedCov[coverageKey].oldPath.replace(instrumentCwd + "/", "");
     obj2[newKey] = {
+      // @ts-ignore
       ...reMapedCov[coverageKey],
       path: newKey,
+      oldPath,
     };
   }