Multi-stroke electromagnetic valve

The invention discloses a multi-stroke electromagnetic valve. The multi-stroke electromagnetic valve comprises a valve shell, a valve element assembly and a guide sleeve. The valve element assembly comprises a valve rod, wherein the bottom end of the valve rod penetrates through the valve shell. The guide sleeve is connected to the valve shell; and the valve element assembly comprises a plunger and an elastic element, the plunger penetrates through a central through hole of the guide sleeve, and the elastic element is arranged between the plunger and the guide sleeve. A protruding block is arranged on the outer peripheral surface of the plunger, a limiting groove set matched with the protruding block is arranged on the inner peripheral surface of the guide sleeve, and the limiting groove set is composed of at least three limiting grooves; and the protruding block can be selectively connected to one of the at least three limiting grooves, and the plunger is correspondingly located at different positions when t