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Aiming at the problems existing in the existing unmanned surface vehicle, in order to improve its maximum control distance, a system using wireless data transmission module as the transmission medium is designed to transmit the data between the lower computer and the upper computer; From the two-dimensional scanning image information of the laser radar, the grid map of the water surface environment is made according to the Slam (simultaneous localization and mapping) algorithm. The relative position of the unmanned ship is estimated by matching the scanning map at the continuous time and positioned on the constructed grid map, so as to achieve the purpose of traveling according to the path planning; The software based on MFC framework and the controller based on STM32 are designed; The position and attitude information of the unmanned ship is sent to the upper / lower computer, and the upper computer gets the information and transmits it to the lower computer to realize the purpose of remote control driving; The test results show that, unlike the conventional network signal transmission and receiving transmission data, it can still maintain good remote control within 1300m in the environment without network base station, and the autonomous travel positioning error is within 15cm, which confirms the reliability and accuracy of the system.