The invention discloses an impact rotary type displacement-limiting and transient-opening valve, belongs to the technical field of fire extinguishing and explosion suppression equipment, and providesa high-speed transient-opening mechanism and a valve body structure. The technical scheme is as follows, an anti-explosion clamping tripping main shaft is vertically arranged on the valve body, a compression spring is arranged between the anti-explosion clamping tripping main shaft and the valve body, the anti-explosion clamping tripping main shaft can move up and down relative to the valve body,a clamping groove is formed in the upper part of the anti-explosion clamping tripwire main shaft, wherein the upper part of the valve body is fixedly provided with an outer cover, an inclined end surface is arranged at one end of the snapping piston mandrel, one end of the snapping piston mandrel can be clamped in the clamping groove, a blade is fixed on the snapping piston mandrel, an electronictrigger is arranged on the outer cover, the electronic trigger is matched with the blade, and the electronic trigger can push the snapping piston mandrel to rotate. The fire extinguishing and explosion suppression device can be widely applied to the field of fire extinguishing and explosion suppression devices.