The utility model discloses a bending pin triggering type pressure release valve. The main components of the bending pin triggering type pressure release valve comprise a protection cover, a fusible nut, a pin, a top cover, a valve body, an inlet flange, a valve base, a pin cylinder, a valve rod, a proximity switch, a pin cage and a clamping nut, wherein the pin is the key component to trigger pressure release. When the pressure in a system is lower than a specific point, and load born by the pin is smaller than critical load and in a stable state, the valve sealing is achieved; when the pressure in the system is higher than the specific point, and the load born by the pin exceeds the critical load and generates beading due to lack of stability, the valve is triggered to release pressure; after the valve releases the pressure, the valve rod can be reset from the outside of the valve body, and the pin is replaced. The bending pin triggering type pressure release valve can be installed on equipment or pipelines, when the pressure exceeds a set pressure, automatic pressure release is performed, and the equipment and the pipelines are protected.