This design is based on MSP432 single chip microcomputer as the core, combined with visual recognition technology, through the speed closed loop to control the intelligent car, and realize the dual car to follow and overtake on the predetermined track. In this design, MSP432P401Y is selected as the main control, and the identification information is sent to the master control through the serial port, so as to enter the corresponding road and prevent the car from deviating from the predetermined track; The leading car and the following car communicate with each other through Bluetooth module to achieve the goa of two vehicle collaborative transportation; Through the feedback information of the motor encoder, the speed closed-loop control system of the trolley is designed through the feedback information of the motor encoder to realize the precise control of the transportation distance. After detection, this design has the advantages of fast identification speed, high accuracy, stable transportation and high efficiency.