diff --git a/services/audio_service/server/src/offline_stream_in_server.cpp b/services/audio_service/server/src/offline_stream_in_server.cpp
index 71f644ce9cc25f2b9f9ad5f3d72d9368b61596e7..1ee9172f3312776a5e3f7db70bf9111bc22f551b 100644
--- a/services/audio_service/server/src/offline_stream_in_server.cpp
+++ b/services/audio_service/server/src/offline_stream_in_server.cpp
@@ -67,6 +67,7 @@ int32_t OfflineStreamInServer::SetParamOfflineEffectChain(const std::vector<uint
 int32_t OfflineStreamInServer::PrepareOfflineEffectChain(std::shared_ptr<AudioSharedMemory> &inBuffer,
     std::shared_ptr<AudioSharedMemory> &outBuffer)
 {
+    CHECK_AND_RETURN_RET_LOG(effectChain_, ERR_ILLEGAL_STATE, "effectChain not init");
     if (serverBufferIn_ == nullptr || serverBufferOut_ == nullptr) {
         uint32_t inSize = 0;
         uint32_t outSize = 0;
diff --git a/services/audio_service/test/unittest/offline_stream_in_server_unit_test.cpp b/services/audio_service/test/unittest/offline_stream_in_server_unit_test.cpp
index 39f88bce542a31ded633e645beb108fc759ce4ac..5dd7fabb1feb0d6db09df65b5c2f3017a8170414 100644
--- a/services/audio_service/test/unittest/offline_stream_in_server_unit_test.cpp
+++ b/services/audio_service/test/unittest/offline_stream_in_server_unit_test.cpp
@@ -107,5 +107,22 @@ HWTEST(OfflineStreamInServerUnitTest, OfflineStreamInServer_003, TestSize.Level1
     auto ret = offlineStreamInServer->PrepareOfflineEffectChain(inBuffer, outBuffer);
     EXPECT_EQ(ret, 0);
 }
+
+/**
+* @tc.name  : Test OfflineStreamInServer::PrepareOfflineEffectChain()
+* @tc.number: OfflineStreamInServer_004
+* @tc.desc  : Test OfflineStreamInServer interface.
+*/
+HWTEST(OfflineStreamInServerUnitTest, OfflineStreamInServer_004, TestSize.Level1)
+{
+    auto offlineStreamInServer = std::make_shared<OfflineStreamInServer>();
+    EXPECT_NE(offlineStreamInServer, nullptr);
+
+    std::shared_ptr<AudioSharedMemory> inBuffer = nullptr;
+    std::shared_ptr<AudioSharedMemory> outBuffer = nullptr;
+
+    auto ret = offlineStreamInServer->PrepareOfflineEffectChain(inBuffer, outBuffer); // effectChain is nullptr
+    EXPECT_NE(ret, 0);
+}
 } // namespace AudioStandard
 } // namespace OHOS
\ No newline at end of file