The invention discloses a water pump convenient to install. The water pump comprises a base and a water pump body; the upper surface of the base is provided with a concave groove, the left side surface and the right side surface of the inner side wall of the concave groove are symmetrically provided with slide grooves, the inner side walls of the two slide grooves are slidably connected with slideblocks, and the opposite side surfaces of the two slide blocks are fixedly connected with the left side surface and the right side surface of an installation block; by arranging limiting clamping blocks, limiting clamping grooves, a connection plate, springs a, positioning pins and telescopic rods, the limiting clamping blocks on the connection plate and the limiting clamping blocks in installation grooves are driven to be cooperatively clamped into the limiting clamping grooves formed in a water pump base through elastic action of the springs a, positioning of the water pump base is achieved, accordingly, installing of the water pump body is realized, and installation is more convenient; and meanwhile, the positioning pins are inserted into a positioning hole a and a positioning hole b so that the connection plate can be positioned, accordingly, installation of the water pump body is more stable, and the situation that bolts are loosened when the bolts are used for installing is avoided.