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This paper presents a video surveillance system as the main chip based on DSP, and RTL8019AS as ethernet interface chip. Realization of upper computer software system based on the socket class of visual C, and the local computers is composed of the camera, DSP control unit, CPLD interface, ethernet interface, wireless router, etc. the function modules of system. This paper introduces the interface realization of different functional module and software flowchart. Proved by the experiment, the video image is flowing in this system, and the system has realized the effective PMP data transmission in IP networks. So the system has good real-time, practicability and accuracy.