Cleaning equipment, walking device and cleaning system

The utility model discloses cleaning equipment, a walking device and a cleaning system.The cleaning equipment at least comprises a machine body, a driving assembly and an obstacle crossing assembly, and the driving assembly is located at the bottom of the machine body and used for driving the machine body to move; the machine body has a front direction and a rear direction, an obstacle avoidance space is arranged at the edge of the bottom of the rear end of the machine body, and the obstacle crossing assembly is telescopically arranged in the obstacle avoidance space; when the machine body stands on the horizontal ground, at least part of the obstacle crossing assembly is exposed out of the obstacle avoidance space, and the obstacle crossing assembly does not make contact with the ground; and when the machine body inclines, the obstacle crossing assembly moves in the inclination direction of the machine body, so that the obstacle crossing assembly partially enters the obstacle avoidance space. According to th