diff --git a/services/appdfr/src/appfreeze_manager.cpp b/services/appdfr/src/appfreeze_manager.cpp
index fc6e4f1a548052e795260e14e12cebf7a6248425..e4d6ef56023fb12c194e1b63fa97ca5d83b72544 100644
--- a/services/appdfr/src/appfreeze_manager.cpp
+++ b/services/appdfr/src/appfreeze_manager.cpp
@@ -894,7 +894,13 @@ void AppfreezeManager::PerfStart(std::string eventName)
 }
 std::string AppfreezeManager::GetFirstLine(const std::string &path)
 {
-    std::ifstream inFile(path.c_str());
+    std::string realPath;
+    if (!OHOS::PathToRealPath(path, realPath)) {
+        TAG_LOGE(AAFwkTag::APPDFR, "realpath failed, path:%{public}s errno:%{public}d",
+            path.c_str(), errno);
+        return "";
+    }
+    std::ifstream inFile(realPath.c_str());
     if (!inFile) {
         return "";
     }
diff --git a/test/unittest/dfr_test/appfreeze_manager_test/appfreeze_manager_test.cpp b/test/unittest/dfr_test/appfreeze_manager_test/appfreeze_manager_test.cpp
index aa170c629c4ab7f995e49880ddd45ae8656c79fe..fc145dd7c04ca14f450b8a45b4bc286767b3b348 100644
--- a/test/unittest/dfr_test/appfreeze_manager_test/appfreeze_manager_test.cpp
+++ b/test/unittest/dfr_test/appfreeze_manager_test/appfreeze_manager_test.cpp
@@ -379,5 +379,17 @@ HWTEST_F(AppfreezeManagerTest, AppfreezeManagerTest_GetFaultNotifyData_001, Test
     faultNotifyData = appfreezeManager->GetFaultNotifyData(faultData, pid);
     EXPECT_EQ(faultNotifyData.eventId, 10);
 }
+
+/**
+ * @tc.number: AppfreezeManagerTest_GetFirstLine_001
+ * @tc.desc: add testcase
+ * @tc.type: FUNC
+ */
+HWTEST_F(AppfreezeManagerTest, AppfreezeManagerTest_GetFirstLine_001, TestSize.Level1)
+{
+    std::string ret = appfreezeManager->GetFirstLine("../111");
+    EXPECT_EQ(ret, "");
+    appfreezeManager->GetFirstLine("/data/log/test");
+}
 }  // namespace AppExecFwk
 }  // namespace OHOS