The invention discloses a water cup. The water cup comprises an electrical connection part and an electrical connection plug connected with a cup body through a power cord, the left end surface of thecup body is fixedly provided with a handle, the right end surface of the cup body is provided with a cup opening for pouring water out, the electrical connection part comprises a base body, insertioncavities with cavity openings facing rightwards are formed in the base body in an up-down corresponding mode, the base body is further internally provided with a containing cavity extending up and down and penetrating through the insertion cavities, steering cylinders coaxial with the insertion cavities are installed in the containing cavity in an up-down corresponding mode through steering bearings, a running-through cavity communicated in a left-right mode is formed in each steering cylinder, an inner thread is arranged on the inner wall of each running-through cavity, first gears are fixedly installed on the outer walls of the steering cylinders, second gears matched with the first gears are rotatably installed on in the middle of the containing cavity through a steering shaft, the steering shaft is connected with a motor fixedly installed in the base body, and sliding cavities extending leftwards and rightwards are formed in the outer side walls of the insertion cavities.