At present, the automaticcoupling system for submersible sewage pump currently can only be used in the situation of delivery under the 50 meters. So, an automatic coupling system for high pressure submersible sewage pump has been proposed and designed. According to the system installation requirements, the installation method was determined, the mechanical structure was designed, and the hydraulic system and fixture were designed. The control of this system were realized by using Programmable Logical Controller (PLC) touch screen integrated machine, when the system was running, the relevant data acquisition and status display could also be accomplished. It is proved that the system can be used for automaticcoupling installation of submersible sewage pumps in high pressure applications through experiments.