Abstract: The method based on the integral image and the haar-like feature for detecting body limbs is proposed for video images. Haar-like feature is suitable for detecting rectangular or rectangular-like image areas because of its inherent characteristics, and the integral image can quickly locate the body by the haarlike feature in the image. The integral image is the original image for video. After edge detection template is convoluted with each frame of the original video, they are added to obtain the integral image. The body physical location can be calculated by the integral image and using haar-like feature according to the set threshold. The experiment results show the algorithm is better than the background subtraction.