The mobile robot chassis based on SLAM laser navigation technology can realize spinning turning, straight-line driving, humanized obstacle avoidance design of intelligent charging, and various secondary development data interfaces. It has reserved network ports, manual charging ports, and USB ports. As well as input and output ports, it is suitable for the secondary development of various mobile robots. The whole system has on-board charging module, safety protection module, excellent shock absorption design device, independent patented core controller, convenient external implementation, charging interface module, and automatic charging station.