The invention provides a conveying and lifting platform for a wall-climbing robot and a lifting method thereof. The conveying and lifting platform for the wall-climbing robot comprises a fixed platform body, an overturning frame, a hydraulic cylinder and a guiding section, wherein the fixed platform body is of an L-shaped structure; the overturning frame is of an inverted-L-shaped structure; the fixed platform body and the overturning frame are in rotating connection, and the shape of the fixed platform body is matched with that of the overturning frame; one end of the hydraulic cylinder is fixedly connected to the bottom of the fixed platform body, and the other end of the hydraulic cylinder is installed on the overturning frame in a rotating mode; the hydraulic cylinder pushes the overturning frame to be turned upwards; and the guiding section is arranged at the front end of the bottom of the overturning frame in a rotating mode. By means of the conveying and lifting platform disclosed by the invention, the wall-climbing robot can be conveyed in place at a time, the lifting trouble by invoking a forklift is saved, and conveying work and lifting work of the wall-climbing robot can be completed at the same time.