diff --git a/test/unittest/components/v1_0/hdi_device/hdi_device_test.cpp b/test/unittest/components/v1_0/hdi_device/hdi_device_test.cpp
index d3ce6af40f5f4fbbe05a7c747b2dac83123d17fe..0beb9100e0e02c775f862e094c864a6767a67932 100644
--- a/test/unittest/components/v1_0/hdi_device/hdi_device_test.cpp
+++ b/test/unittest/components/v1_0/hdi_device/hdi_device_test.cpp
@@ -903,25 +903,6 @@ HWTEST_F(HDIDeviceTest, hdidevice_preparemodelfrommodelcache_002, TestSize.Level
     EXPECT_EQ(OH_NN_UNAVAILABLE_DEVICE, result);
 }
 
-/* *
- * @tc.name: hdidevice_preparemodelfrommodelcache_003
- * @tc.desc: Verify the PrepareModelFromModelCache function return nullptr.
- * @tc.type: FUNC
- */
-HWTEST_F(HDIDeviceTest, hdidevice_preparemodelfrommodelcache_003, TestSize.Level0)
-{
-    OHOS::sptr<V1_0::INnrtDevice> device = V1_0::INnrtDevice::Get(false);
-    std::unique_ptr<HDIDeviceV1_0> hdiDevice = std::make_unique<HDIDeviceV1_0>(device);
-    EXPECT_NE(hdiDevice, nullptr);
-
-    std::vector<Buffer> modelCache = { { nullptr, 0 } };
-    ModelConfig config;
-    std::shared_ptr<PreparedModel> preparedModel;
-    bool isUpdatable = false;
-    OH_NN_ReturnCode result = hdiDevice->PrepareModelFromModelCache(modelCache, config, preparedModel, isUpdatable);
-    EXPECT_EQ(OH_NN_NULL_PTR, result);
-}
-
 /* *
  * @tc.name: hdidevice_preparemodelfrommodelcache_004
  * @tc.desc: Verify the PrepareModelFromModelCache function return success.
diff --git a/test/unittest/components/v2_0/hdi_device/hdi_device_test.cpp b/test/unittest/components/v2_0/hdi_device/hdi_device_test.cpp
index b36c8028fe1e0489e229a95150333181de2d753b..f7646d21db713ec07ace925d2b76d1415dc0a843 100644
--- a/test/unittest/components/v2_0/hdi_device/hdi_device_test.cpp
+++ b/test/unittest/components/v2_0/hdi_device/hdi_device_test.cpp
@@ -1046,25 +1046,6 @@ HWTEST_F(HDIDeviceTest, hdidevice_preparemodelfrommodelcache_002, TestSize.Level
     EXPECT_EQ(OH_NN_FAILED, result);
 }
 
-/* *
- * @tc.name: hdidevice_preparemodelfrommodelcache_003
- * @tc.desc: Verify the PrepareModelFromModelCache function return nullptr.
- * @tc.type: FUNC
- */
-HWTEST_F(HDIDeviceTest, hdidevice_preparemodelfrommodelcache_003, TestSize.Level0)
-{
-    OHOS::sptr<V2_0::INnrtDevice> device = V2_0::INnrtDevice::Get(false);
-    std::unique_ptr<HDIDeviceV2_0> hdiDevice = std::make_unique<HDIDeviceV2_0>(device);
-    EXPECT_NE(hdiDevice, nullptr);
-
-    std::vector<Buffer> modelCache = { { nullptr, 0 } };
-    ModelConfig config;
-    std::shared_ptr<PreparedModel> preparedModel;
-    bool isUpdatable = false;
-    OH_NN_ReturnCode result = hdiDevice->PrepareModelFromModelCache(modelCache, config, preparedModel, isUpdatable);
-    EXPECT_EQ(OH_NN_NULL_PTR, result);
-}
-
 /* *
  * @tc.name: hdidevice_preparemodelfrommodelcache_004
  * @tc.desc: Verify the PrepareModelFromModelCache function return success.
@@ -2418,25 +2399,6 @@ HWTEST_F(HDIDeviceTest, hdidevice_V2_1_preparemodelfrommodelcache_002, TestSize.
     EXPECT_EQ(OH_NN_FAILED, result);
 }
 
-/* *
- * @tc.name: hdidevice_V2_1_preparemodelfrommodelcache_003
- * @tc.desc: Verify the PrepareModelFromModelCache function return nullptr.
- * @tc.type: FUNC
- */
-HWTEST_F(HDIDeviceTest, hdidevice_V2_1_preparemodelfrommodelcache_003, TestSize.Level0)
-{
-    sptr<INnrtDevice> device = sptr<MockIDevice>(new (std::nothrow) MockIDevice());
-    std::unique_ptr<HDIDeviceV2_1> hdiDevice = std::make_unique<HDIDeviceV2_1>(device);
-    EXPECT_NE(hdiDevice, nullptr);
-
-    std::vector<Buffer> modelCache = { { nullptr, 0 } };
-    ModelConfig config;
-    std::shared_ptr<PreparedModel> preparedModel;
-    bool isUpdatable = false;
-    OH_NN_ReturnCode result = hdiDevice->PrepareModelFromModelCache(modelCache, config, preparedModel, isUpdatable);
-    EXPECT_EQ(OH_NN_NULL_PTR, result);
-}
-
 /* *
  * @tc.name: hdidevice_V2_1_preparemodelfrommodelcache_004
  * @tc.desc: Verify the PrepareModelFromModelCache function return success.