The invention relates to the technical field of water faucet production equipment, in particular to a gravity casting device for water faucet production. The device comprise a base, wherein a rack isfixedly mounted on the upper surface of the base, the middle position of the inner top of the rack is fixedly provided with a hydraulic telescopic rod, a buffer layer is fixedly mounted at the lower end of the hydraulic telescopic rod, a male die is fixedly mounted on the lower surface of the buffer layer, a fixing plate is fixedly mounted on the inner lower portion of the rack, a fixing die is fixedly mounted in the middle of the upper surface of the fixing plate, and a die removing device is fixedly mounted in the middle of the upper surface of the base; and the fixing die comprises a femaledie fixedly mounted in the middle of the upper surface of the fixing plate, the lower end of the male die and a die cavity are mutually matched, condensing mechanisms are fixedly mounted on the two sides of the female die correspondingly, and a pouring mechanism is fixedly mounted on the upper portion of one side of the female die. According to the gravity casting device for faucet production, the male die and the female die can be combined more stably, the pouring process can be efficient and uniform in diverting under the action of gravity, the quality of a product is improved, and die removing is facilitated.