Robot foot structure capable of self-adapting to terrain

The invention discloses a terrain self-adaptive foot structure of a robot. The terrain self-adaptive foot structure comprises a self-adaptive module, a locking module, a supporting module and a sliding block module. The upper end of a supporting column of the self-adaptive module penetrates through the foot plate main body to be matched with a clamping device of the locking module, and the tail ends of the two clamping devices are connected together in a sleeving mode through an elastic piece; the supporting module is fixed to the foot plate body and provided with a sliding way, the sliding block module is located above the supporting module, and a sliding block is located in the sliding way and can horizontally move along the sliding way. The sliding block is connected with the tail ends of the two nearest clamping arms through elastic pieces. On the premise that the stability of the feet of the robot is not reduced, the robot can still walk on the flat ground or reduce the influence of obstacles on the move