Based on area array CCD,the path identification and control strategies for freescale intelligent smart car were analyzed. While obtaining the image of the path，the image distorting induced by installation angle and height of the camera was analyzed, and a segmental correction method was used to deduce the bad influence. On this basis, the black line center extration algorithm was used to process the realtime image, and the central guide line's image characteristics and prospective influence were analyzed.A method for recognition and center extration was proposed. Then, the performance of the steering gear was carried out. According the previously processed image information，the PID control method was used to control the steering of the steering gear and BangBang & PID integrated control method was used to control the driving speed of the smart car,which improved its stability and driving speed.