The invention relates to an automatic catching device for a shrimp pond. The device comprises a frame which is composed in a manner that two floating bodies are connected through a steel pipe. A machine body is installed on the floating bodies internally provided with driving devices. Four inner angles of each floating body are equipped with plastic tubes. Two front plastic tubes are wounded by lead wires and connected with copper wires. One end of each lead wire is connected with each copper wire and the other end of each lead wire is connected into the machine body. Cables are connected among remaining plastic tubes. A fishing net is arranged among the cables and the plastic tubes. The automatic catching device for the shrimp pond has following beneficial effects: the device is easy and practical in structure, and low in manufacture cost and mostly used for catching shrimps raised in the shrimp pond; and high automation and catching efficiency are obtained.