In this paper, an intelligent car control system based on MCU is proposed. A camera mounted on the car is used to capture path images, in which path is recognized by image processing method. Based on the extracted path information, the car motor controls are applied to keep car running in the given path. The recognition rate and precision of main track and starting line will directly affect the precision of control system. In this article, a recognition method is proposed, and experimental results show that our car can follow the main track and stopped on the starting line.