A sewage pump is a type of pump that is integrated with an electric motor and operates submerged in liquid. Compared to standard horizontal or vertical sewage pumps, the sewage pump has a compact structure and requires less floor space. It is easy to install and maintain, with large sewage pumps typically equipped with an automatic coupling device for easy installation and maintenance. It can run continuously for long periods. Due to the same shaft for the pump and motor, the shaft is short and the rotating parts are lightweight, resulting in a relatively smaller load (radial) on the bearings, significantly extending its lifespan compared to general pumps. There is no cavitation damage or issues with filling and draining water. Particularly, the latter greatly facilitates the operators. It has low vibration and noise, low motor temperature rise, and is environmentally friendly.