The utility model provides a liquid path disconnector, and relates to the field of an industrial valve. The liquid path disconnector comprises a liquid valve and a liquid path valve, wherein the liquid valve comprises a first valve body, a first ejector pin assembly, a valve core assembly and an inner slide sleeve, the inner slide sleeve is inserted into the first valve body and is fixedly connected with the first valve body, the valve core assembly is inserted inside the inner slide sleeve and is in clearance fit with the inner slide sleeve, a first spring is arranged between the end surface of the valve core assembly and the inner wall of the outlet part of the first valve body, the first ejector pin assembly passes through the inside of the valve core assembly and forms linear sealing with one end of the valve core assembly, the liquid path valve comprises a second valve body, a support sleeve and a second ejector pin assembly, the support sleeve is provided with a flow passage hole, the second ejector pin assembly is inserted into the support sleeve from the outlet part of the liquid path valve and is in clearance fit with the support sleeve, the linear sealing is formed at the second ejector pin assembly and the outlet part of the second valve body, and the end surface of the outlet part of the liquid path valve is inserted into the first valve body from an inlet of the first valve body. The liquid path disconnector has the advantages that the fast disconnection function requirement of a spaceflight liquid path system can be met, the structure is simple, the mass volume ratio is small, the plugging and unplugging force is small, the sealing performance is good, and the reliability is high.