The disclosure provides a vacuum storage tank, comprising a vacuum storage tank body. The vacuum storage tank body is provided with a storage cavity and a pressure release channel in communication with the storage cavity. The pressure release channel is provided with a pressure release structure, the pressure release structure includes a pressure release cylinder, and the pressure release cylinder is placed in the pressure release channel. The pressure release cylinder includes a manipulation part and a sealing member for blocking a port of the pressure release channel, and the manipulation part extends from an outer wall of the vacuum storage tank body. A reset retaining structure is arranged between the pressure release cylinder and the vacuum storage tank body to control the pressure release cylinder so that the sealing member keeps blocking the port of the pressure release channel.