Double-sealed sterile water tank

The utility model discloses a double-sealed sterile water tank, relates to the technical field of sterile water tanks, and aims to solve the problems that the sterile water tank in the prior art is generally lack of a double-sealed protective structure, so that water is difficult to prevent from overflowing from the water tank when the water tank is aged or broken, and the service life of the water tank is prolonged. The sterile water tank comprises a bearing table and a fixed cylinder which is fixedly mounted at the upper end of the bearing table, a sealing body is fixedly installed on the inner wall of the fixing cylinder, a sterile water tank body is installed on the inner wall of the sealing body in a threaded mode, a liquid injection pipe is fixedly installed at the upper end of the sterile water tank body, a bent pipe is fixedly installed on the inner wall of the upper end of the liquid injection pipe, and a first water purification body is installed on the outer wall of the lower end of the bent pipe i