Submersible sewage pump with long service life

The utility model discloses a submersible sewage pump with long service life, relates to the technical field of submersible sewage pumps, and aims to solve the problem that the service life of the submersible sewage pump is shortened under the long-term influence due to the fact that the existing submersible sewage pump is easily influenced by the outside in the use process. A water outlet is formed in one side of the pump body, a drain hole is formed in the lower end of the pump body, a first clamping block is arranged at the upper end of the water outlet, a second clamping block is arranged on one side of the drain hole, a protective cover is arranged in the second clamping block and the first clamping block, and the protective cover is connected with the second clamping block and the first clamping block in a clamped mode. A plurality of first fixing blocks distributed at equal intervals are arranged on the inner wall of the protection cover, inserting blocks are arranged at the front ends of the first fix