A simple intelligent electric vehicle adopts 80 C51 single chip microcomputer for intelligent control. Start the car manually and reset. When passing the prescribed starting black line, it is detected by ultrasonic sensor and infrared photoelectric sensor, and then starts counting, displaying, avoiding obstacles and regulating speed through single chip microcomputer. The automatic obstacle avoidance function of the system is realized by the forward detection of ultrasonic sensor and the left and right sides detection of infrared photoelectric sensor. The bipolar h PWM technology is used to improve the static and dynamic performance of the electric vehicle. Dynamic co-shade shows driving time and mileage.