diff --git a/services/screenservice/sourceservice/dscreenmgr/2.0/include/dscreen.h b/services/screenservice/sourceservice/dscreenmgr/2.0/include/dscreen.h
index 00c439fa297005a87ff7599f3908870ec760c967..f4ef5ca11299dda6b07674fa658195acc0f650e7 100644
--- a/services/screenservice/sourceservice/dscreenmgr/2.0/include/dscreen.h
+++ b/services/screenservice/sourceservice/dscreenmgr/2.0/include/dscreen.h
@@ -112,6 +112,7 @@ private:
     void HandleDisconnect();
     int32_t StartSenderEngine();
     int32_t StopSenderEngine();
+    std::shared_ptr<VideoParam> ParseInputScreenParam(const std::string &param, const std::string &taskId);
 
     /*
      * Negotiate the codec format between local to remote device,
diff --git a/services/screenservice/sourceservice/dscreenmgr/2.0/src/dscreen.cpp b/services/screenservice/sourceservice/dscreenmgr/2.0/src/dscreen.cpp
index 7515f38a72b5ffea9f11ee5c90455e781f3338cd..e54b7c7f846f9df0a895a788fc9d5431757f6074 100644
--- a/services/screenservice/sourceservice/dscreenmgr/2.0/src/dscreen.cpp
+++ b/services/screenservice/sourceservice/dscreenmgr/2.0/src/dscreen.cpp
@@ -136,31 +136,11 @@ void DScreen::HandleEnable(const std::string &param, const std::string &taskId)
         return;
     }
     SetState(ENABLING);
-
-    json attrJson = json::parse(param, nullptr, false);
-    if (!CheckJsonData(attrJson)) {
-        DHLOGE("HandleEnable, check json data failed.");
-        dscreenCallback_->OnRegResult(shared_from_this(), taskId, ERR_DH_SCREEN_SA_ENABLE_FAILED,
-            "enable param json is invalid.");
-        ReportRegisterFail(DSCREEN_REGISTER_FAIL, ERR_DH_SCREEN_SA_ENABLE_FAILED, GetAnonyString(devId_).c_str(),
-            GetAnonyString(dhId_).c_str(), "check json data failed.");
-        SetState(DISABLED);
-        return;
-    }
+    videoParam_ = ParseInputScreenParam(param, taskId);
     if (videoParam_ == nullptr) {
-        videoParam_ = std::make_shared<VideoParam>();
-    }
-    int32_t ret = NegotiateCodecType(attrJson[KEY_HISTREAMER_VIDEO_DECODER]);
-    if (ret != DH_SUCCESS) {
-        DHLOGE("HandleEnable, negotiate codec type failed.");
-        dscreenCallback_->OnRegResult(shared_from_this(), taskId, ERR_DH_SCREEN_SA_ENABLE_FAILED,
-            "negotiate codec type failed.");
-        ReportRegisterFail(DSCREEN_REGISTER_FAIL, ERR_DH_SCREEN_SA_ENABLE_FAILED, GetAnonyString(devId_).c_str(),
-            GetAnonyString(dhId_).c_str(), "negotiate codec type failed.");
+        DHLOGE("DScreen::HandleEnable, videoParam_ is nullptr");
         return;
     }
-    videoParam_->SetScreenWidth(attrJson[KEY_SCREEN_WIDTH].get<uint32_t>());
-    videoParam_->SetScreenHeight(attrJson[KEY_SCREEN_HEIGHT].get<uint32_t>());
     uint64_t screenId = ScreenMgrAdapter::GetInstance().CreateVirtualScreen(devId_, dhId_, videoParam_);
     if (screenId == SCREEN_ID_INVALID) {
         DHLOGE("HandleEnable, create virtual screen failed.");
@@ -178,6 +158,33 @@ void DScreen::HandleEnable(const std::string &param, const std::string &taskId)
         "dscreen enable success.");
 }
 
+std::shared_ptr<VideoParam> DScreen::ParseInputScreenParam(const std::string &param, const std::string &taskId)
+{
+    json attrJson = json::parse(param, nullptr, false);
+    if (!CheckJsonData(attrJson)) {
+        DHLOGE("HandleEnable, check json data failed.");
+        dscreenCallback_->OnRegResult(shared_from_this(), taskId, ERR_DH_SCREEN_SA_ENABLE_FAILED,
+            "enable param json is invalid.");
+        ReportRegisterFail(DSCREEN_REGISTER_FAIL, ERR_DH_SCREEN_SA_ENABLE_FAILED, GetAnonyString(devId_).c_str(),
+            GetAnonyString(dhId_).c_str(), "check json data failed.");
+        SetState(DISABLED);
+        return nullptr;
+    }
+    int32_t ret = NegotiateCodecType(attrJson[KEY_HISTREAMER_VIDEO_DECODER]);
+    if (ret != DH_SUCCESS) {
+        DHLOGE("HandleEnable, negotiate codec type failed.");
+        dscreenCallback_->OnRegResult(shared_from_this(), taskId, ERR_DH_SCREEN_SA_ENABLE_FAILED,
+            "negotiate codec type failed.");
+        ReportRegisterFail(DSCREEN_REGISTER_FAIL, ERR_DH_SCREEN_SA_ENABLE_FAILED, GetAnonyString(devId_).c_str(),
+            GetAnonyString(dhId_).c_str(), "negotiate codec type failed.");
+        return nullptr;
+    }
+    auto videoParam = std::make_shared<VideoParam>();
+    videoParam->SetScreenWidth(attrJson[KEY_SCREEN_WIDTH].get<uint32_t>());
+    videoParam->SetScreenHeight(attrJson[KEY_SCREEN_HEIGHT].get<uint32_t>());
+    return videoParam;
+}
+
 void DScreen::HandleDisable(const std::string &taskId)
 {
     DHLOGI("HandleDisable, devId: %s, dhId: %s", GetAnonyString(devId_).c_str(), GetAnonyString(dhId_).c_str());
diff --git a/services/screenservice/test/unittest/sourceservice/dscreenmgr/2.0/src/dscreen_test.cpp b/services/screenservice/test/unittest/sourceservice/dscreenmgr/2.0/src/dscreen_test.cpp
index 5534a2cd0e51e00516a98f4ff30eb7953c9fd6de..7acbaafbca4a2f54761480eadd4ccf6066a8a8ce 100644
--- a/services/screenservice/test/unittest/sourceservice/dscreenmgr/2.0/src/dscreen_test.cpp
+++ b/services/screenservice/test/unittest/sourceservice/dscreenmgr/2.0/src/dscreen_test.cpp
@@ -121,6 +121,19 @@ HWTEST_F(DScreenTestV2, HandleEnable_001, TestSize.Level1)
     EXPECT_EQ(SCREEN_ID_INVALID, dScreen_->screenId_);
 }
 
+/**
+ * @tc.name: ParseInputScreenParam_001
+ * @tc.desc: Verify the ParseInputScreenParam function failed.
+ * @tc.type: FUNC
+ * @tc.require: Issue Number
+ */
+HWTEST_F(DScreenTestV2, ParseInputScreenParam_001, TestSize.Level1)
+{
+    std::string param = "param";
+    std::string taskId = "taskId";
+    EXPECT_EQ(nullptr, dScreen_->ParseInputScreenParam(param, taskId));
+}
+
 /**
  * @tc.name: HandleDisable_001
  * @tc.desc: Verify the HandleDisable function failed.