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The main purpose of the image surveillance system is to monitor and control the target area or space in real time. The purpose of the image surveillance system is to obtain the target image accurately and clearly. The traditional image monitoring system has the disadvantages of complex wiring, small application range and poor scalability. In order to improve the image quality of image surveillance system and improve its poor scalability, a wireless embedded image surveillance system based on ARM is proposed, and the target detection algorithm is designed. Based on background subtraction algorithm and adaptive threshold, the quality of dynamic image acquisition is improved, and the target tracking function is realized. The designed system can monitor the target area in real time, obtain the target information and dynamically track the moving target. Experimental results show that the system has high real-time and reliability in image surveillance.