The invention belongs to the technical field of robots, and in particular relates to a highly adaptable universal motion platform for robots facing nuclear-related complex environments; the purpose of the invention is to improve the ability of robots to pass through environments such as narrow spaces, flat passages, steps, obstacles, and ravines ; The platform consists of four three-degree-of-freedom robot leg systems based on synchronous belt transmission; each three-degree-of-freedom robot leg system includes: footed robot body, hip joint "abduction / adduction" drive motor and Its integrated reducer, gear A, knee joint "extend / bend" driving motor, gear B, hip joint "abduction / adduction" motion base, thigh connecting rod, hexagonal rubber block at the foot end, hip joint " Extend / Bend" drive motor, bearings, ball screw mounting bar mount, ball screw nut connecting shaft, hip push rod, calf link and ball screw.