The invention discloses a screw conveyor for garbage collection. The screw conveyor for garbage collection comprises a tank body. The right tail end of the tank body is provided with a discharge port.A feeding hopper is arranged on the upper portion of the left side of the tank body. The feeding hopper is connected with an upper cover through a hinge. The outer wall of the upper cover is providedwith a pull ring in a welded manner. A drive reducer is arranged on the left side of the tank body. The bottom of the drive reducer is connected with a damping block through a support. The damping block is connected with a base through a supporting frame. The screw conveyor is provided with universal wheels and positioning shafts, the universal wheels facilitate moving and loading of the equipment; when the equipment works, the equipment can be stably fixed to the ground through the positioning shafts, and the inconvenience caused by moving of the equipment to production and life is avoided;and a water inlet pipe, sprayers and an electromagnetic valve are arranged, the rate and the amount of running water entering the water inlet pipe are controlled through the electromagnetic valve, andwhen the liquid running water enters the sprayers, the running water can become a mist spraying shape to be sprayed to the interior of the tank body to carry out washing work on the inner wall of thetank body.