The invention discloses an environment-friendly cleaning robot, which comprises a base, a transmission device is arranged on the right side of the upper end surface of the base, a transmission groovealong the front-rear direction is arranged at an middle position of the upper end surface of the transmission device, and a transmission vehicle that moves forward and backward is arranged in the transmission groove. Supporting rods are symmetrically arranged on the front and back of the right side of the upper end face of the transmission device, a main case is arranged above the transmission device, the upper ends of the front and back supporting rods are fixedly connected with front and back ends of the right side of the lower end face of the main case respectively, a controller is arrangedon the right side in the main case, a display screen is embedded in the right end face of the main case, a sliding cavity with a downward port is arranged on the left side in the main case, and a first mounting cavity is arranged at the center of the upper end wall of the sliding cavity.