Disclosed is an automatic feeding system for an aquaculture pond. The aquaculture pond is rectangular, the system comprises a feeding hull, a controller and a feeder, the feeding hull is of a twin-hull structure and comprises two parallel boat-shaped buoys and a deck, the two parallel boat-shaped buoys float on the water and are covered and connected into a whole by the deck, an electronic compass, a wireless signal receiver, the controller and the feeder are mounted on the deck, two wireless signal transmitters are mounted on a buttress of the pond at intervals, two screw propellers are symmetrically mounted on the left side and the right side of a stern of the feeding hull, one screw propeller is arranged on each boat-shaped buoy, the electronic compass monitors the instant course of the feeding hull and feeds the instant course back to the controller, the wireless signal receiver receives wireless signals transmitted by the wireless signal transmitters and feeds the wireless signals back to the controller, and the controller controls running of the two screw propellers. Positioning and orienting of the feeding hull in the patrolling process are not affected by the buttress of the pond and weather factors, and sailing and steering stability is better.