diff --git a/services/cameraservice/cameraoperator/client/include/dcamera_client.h b/services/cameraservice/cameraoperator/client/include/dcamera_client.h
index 1df19c7b12cc643a9d4ab797ea0c095b6d78ed35..6c6162c7f71d25c656218cb927fc5f6c5f220dcb 100644
--- a/services/cameraservice/cameraoperator/client/include/dcamera_client.h
+++ b/services/cameraservice/cameraoperator/client/include/dcamera_client.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
+ * Copyright (c) 2021-2025 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -49,7 +49,6 @@ public:
     int32_t SetResultCallback(std::shared_ptr<ResultCallback>& callback) override;
     int32_t PauseCapture() override;
     int32_t ResumeCapture() override;
-    int32_t PrelaunchCamera() override;
 
 private:
     int32_t ConfigCaptureSession(std::vector<std::shared_ptr<DCameraCaptureInfo>>& captureInfos, int32_t sceneMode);
diff --git a/services/cameraservice/cameraoperator/client/include/icamera_operator.h b/services/cameraservice/cameraoperator/client/include/icamera_operator.h
index 90daa089d4f0084af5a70fe942c5311045e1b863..3a34e1d7be292d26ec443a09049e03e201e5319a 100644
--- a/services/cameraservice/cameraoperator/client/include/icamera_operator.h
+++ b/services/cameraservice/cameraoperator/client/include/icamera_operator.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
+ * Copyright (c) 2021-2025 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -64,7 +64,6 @@ public:
     virtual int32_t SetResultCallback(std::shared_ptr<ResultCallback>& callback) = 0;
     virtual int32_t PauseCapture() = 0;
     virtual int32_t ResumeCapture() = 0;
-    virtual int32_t PrelaunchCamera() = 0;
 };
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/services/cameraservice/cameraoperator/client/src/dcamera_client.cpp b/services/cameraservice/cameraoperator/client/src/dcamera_client.cpp
index 099cf53a91c9acbf4d678b085604cb7c7f6774ff..5ce68a62141707bd8d43f96ad201a547521b3ad9 100644
--- a/services/cameraservice/cameraoperator/client/src/dcamera_client.cpp
+++ b/services/cameraservice/cameraoperator/client/src/dcamera_client.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
+ * Copyright (c) 2021-2025 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -665,19 +665,5 @@ int32_t DCameraClient::ResumeCapture()
     }
     return ret;
 }
-
-int32_t DCameraClient::PrelaunchCamera()
-{
-    if (cameraManager_ == nullptr) {
-        DHLOGE("DCameraClient cameraManager_ is nullptr.");
-        return DCAMERA_BAD_VALUE;
-    }
-    int32_t ret = cameraManager_->PrelaunchCamera();
-    if (ret != DCAMERA_OK) {
-        DHLOGE("DCameraClient PrelaunchCamera Start failed, cameraId: %{public}s, ret: %{public}d",
-            GetAnonyString(cameraId_).c_str(), ret);
-    }
-    return ret;
-}
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/services/cameraservice/sinkservice/src/distributedcameramgr/dcamera_sink_controller.cpp b/services/cameraservice/sinkservice/src/distributedcameramgr/dcamera_sink_controller.cpp
index 8462e787a15126bdc868e6c7cbdfec441d1a0b30..089bbfcec5989e3a9eb65e3a5cb6a973ae9f8e06 100644
--- a/services/cameraservice/sinkservice/src/distributedcameramgr/dcamera_sink_controller.cpp
+++ b/services/cameraservice/sinkservice/src/distributedcameramgr/dcamera_sink_controller.cpp
@@ -544,10 +544,6 @@ void DCameraSinkController::OnSessionState(int32_t state, std::string networkId)
                 DHLOGE("operator_ is nullptr");
                 break;
             }
-            int32_t ret = operator_->PrelaunchCamera();
-            if (ret != DCAMERA_OK) {
-                DHLOGE("operator_ PrelaunchCamera error. ret %{public}d.", ret);
-            }
             break;
         }
         case DCAMERA_CHANNEL_STATE_DISCONNECTED:
diff --git a/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/dcamera_sink_output_test.cpp b/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/dcamera_sink_output_test.cpp
index 17d510b2cd621d1b37d62bb2af6b6b82f808a0e9..9c33224a93eb48e027b563d5d177515f55b36db7 100644
--- a/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/dcamera_sink_output_test.cpp
+++ b/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/dcamera_sink_output_test.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Copyright (c) 2021-2025 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -290,18 +290,6 @@ HWTEST_F(DCameraSinkOutputTest, dcamera_sink_output_test_008, TestSize.Level1)
     EXPECT_NE(DCAMERA_OK, ret);
 }
 
-/**
- * @tc.name: dcamera_sink_output_test_009
- * @tc.desc: Verify the PrelaunchCamera function.
- * @tc.type: FUNC
- * @tc.require: I5N1JI
- */
-HWTEST_F(DCameraSinkOutputTest, dcamera_sink_output_test_009, TestSize.Level1)
-{
-    int32_t ret = operator_->PrelaunchCamera();
-    EXPECT_EQ(DCAMERA_OK, ret);
-}
-
 /**
  * @tc.name: dcamera_sink_output_test_010
  * @tc.desc: Verify the UnInit function.
diff --git a/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/mock_camera_operator.h b/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/mock_camera_operator.h
index 2a712d6af2937495e90ad5c70b45a6ab8a6bb0d5..23a849277defdaa380198130db63c9d7ec299761 100644
--- a/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/mock_camera_operator.h
+++ b/services/cameraservice/sinkservice/test/unittest/common/distributedcameramgr/mock_camera_operator.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
+ * Copyright (c) 2021-2025 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -110,11 +110,6 @@ public:
         }
         return DCAMERA_OK;
     }
-
-    int32_t PrelaunchCamera()
-    {
-        return DCAMERA_OK;
-    }
 };
 } // namespace DistributedHardware
 } // namespace OHOS