diff --git a/drivers/external_device_manager/usb/libusb.ndk.json b/drivers/external_device_manager/usb/libusb.ndk.json
index eb677bfeee99b3d144db38b9b9c6af425d602ca6..55f578e408bfb68ec45a13be05dca735cc700654 100644
--- a/drivers/external_device_manager/usb/libusb.ndk.json
+++ b/drivers/external_device_manager/usb/libusb.ndk.json
@@ -46,5 +46,8 @@
     },
     {
         "name": "OH_Usb_DestroyDeviceMemMap"
+    },
+    {
+        "name": "OH_Usb_GetDevices"
     }
 ]
\ No newline at end of file
diff --git a/drivers/external_device_manager/usb/usb_ddk_api.h b/drivers/external_device_manager/usb/usb_ddk_api.h
index 1ee732e19db29b923f2d6ee8b3bff45a7c593aae..cd6213272ef4e910bebe2ea9a7693ef277bf8915 100644
--- a/drivers/external_device_manager/usb/usb_ddk_api.h
+++ b/drivers/external_device_manager/usb/usb_ddk_api.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Huawei Device Co., Ltd.
+ * Copyright (c) 2023-2025 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
@@ -284,6 +284,19 @@ int32_t OH_Usb_CreateDeviceMemMap(uint64_t deviceId, size_t size, UsbDeviceMemMa
  * @version 1.0
  */
 void OH_Usb_DestroyDeviceMemMap(UsbDeviceMemMap *devMmap);
+
+/**
+ * @brief Obtain USB devices.
+ *
+ * @permission ohos.permission.ACCESS_DDK_USB
+ * @param devices USB device array.
+ * @return {@link USB_DDK_SUCCESS} the operation is successful.
+ *         {@link USB_DDK_NO_PERM} permission check failed.
+ *         {@link USB_DDK_INVALID_OPERATION} connect usb ddk service failed.
+ *         {@link USB_DDK_INVALID_PARAMETER} devices is null.
+ * @since 16
+ */
+int32_t OH_Usb_GetDevices(struct Usb_DeviceArray *devices);
 /** @} */
 #ifdef __cplusplus
 }
diff --git a/drivers/external_device_manager/usb/usb_ddk_types.h b/drivers/external_device_manager/usb/usb_ddk_types.h
index 8c51cd7263f1f62c16ac69a271f1206cd926f323..7378ca4542b0ff541069b1ccaf41d7e7bbb4eb2d 100644
--- a/drivers/external_device_manager/usb/usb_ddk_types.h
+++ b/drivers/external_device_manager/usb/usb_ddk_types.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 Huawei Device Co., Ltd.
+ * Copyright (c) 2023-2025 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
@@ -325,6 +325,18 @@ typedef enum {
     /** @error Transmission timeout. */
     USB_DDK_TIMEOUT = 27400004,
 } UsbDdkErrCode;
+
+/**
+ * @brief all usb devices.
+ *
+ * @since 16
+ */
+typedef struct Usb_DeviceArray {
+    /** device id array */
+    uint64_t* deviceIds;
+    /** Number of devices. If the value is 0, no device exists */
+    uint32_t num;
+} Usb_DeviceArray;
 #ifdef __cplusplus
 }
 /** @} */