Trigger electric switch of circuit board

The utility model relates to the technical field of electric switches, and discloses a trigger electric switch of a circuit board, which comprises a switch shell, each side wall of the switch shell is provided with an installation terminal, the switch shell is internally provided with a cavity, the bottom surface of the switch shell is provided with a trigger hole, the bottom of the cavity is provided with a trigger membrane, and the trigger membrane is provided with a trigger switch. A triggering mechanism is arranged in the cavity, and the vertical position of the triggering diaphragm corresponds to the triggering hole and the triggering mechanism. And a limiting cylinder is arranged on the outer side wall of the trigger block. The triggering mechanism of the electric switch is integrally arranged in the closed space, so that the possibility that water vapor in the external environment directly acts on the triggering diaphragm is reduced, and the possibility that the device is accidentally damaged due to wa