The invention discloses a stirrer. The stirrer comprises a container seat and a container, the container is connected to the container seat in a threaded manner, the container is provided with an upper opening and a lower opening, the upper opening is provided with a container cover, the lower opening is in threaded connection with the container seat, the lower opening is provided with a containerbottom, a sealing gasket is arranged between the lower opening and the container bottom, a motor, a water tank and a water pump are arranged in the container, stirring blades are arranged above the container bottom, the stirring blades are connected with a stirring shaft, the center of the container bottom protrudes upwards to form a fixing seat, the stirring shaft goes through the container bottom and is connected with the motor, a bearing sleeves the stirring shaft, a heat conducting sleeve sleeves the bearing, the heat conducting sleeve is in interference fit in the fixing seat, an annularsleeve is arranged in the heat conducting sleeve, the sidewall of the fixing seat is provided with a water inlet hole, a check valve is arranged between the water inlet hole and the annular cavity, the water pump is communicated with a water suction tube and a water inlet tube, the water suction tube is communicated with the water tank, the water inlet tube is communicated with the annular cavity, and the water inlet tube is provided with a check valve. The stirrer of the invention can work continuously, and has a high practicability.