Leakage protection apparatus of fluid equipment

Disclosed in the utility model is a leakage protection apparatus of fluid equipment. The leakage protection apparatus comprises a bolt, a check valve, a transparent check pipe, a one-way pressure release valve, and a check switch. An interface end of the bolt is connected with an oil cavity or a stator check port of tested equipment; and the other end of the bolt is connected with the check valve. The check valve and the transparent check pipe are connected; the one-way pressure release valve is arranged at the top of the transparent check pipe; and the check switch covers the top port of the transparent check pipe. A connecting pipe is arranged at the external side wall of the check switch; and the connecting pipe is connected with an alarm control device of the tested equipment. With the leakage protection apparatus, mechanical and electrical system security of fluid equipment like a pump, a stirrer, and a thruster and the like can be protected.