Rear-view camera mounting structure and excavator

The utility model relates to an excavator, in order to solve the problem that an existing rear-view camera installation structure cannot well protect a rear-view camera, the utility model provides a rear-view camera installation structure and an excavator, and the rear-view camera installation structure comprises a balance weight, the rear-view camera and a cover plate. A containing cavity capable of containing the rear-view camera is formed in the rear side face of the balance weight; the cover plate is fixedly installed on the rear side face of the balance weight through a threaded fastener and used for covering an opening of the containing cavity, a ridge-shaped protrusion protruding backwards is arranged on the cover plate, the side walls of the two sides of the ridge-shaped protrusion are arranged up and down, light-transmitting through holes are formed in the lower side wall of the ridge-shaped protrusion, the inner side of the ridge-shaped protrusion is a concave cavity communicated with the containing