The invention discloses an extrusion-type pulse jet flow generating device based on electromagnetic drive. The extrusion-type pulse jet flow generating device comprises an extrusion plunger piston fabricated by a ferromagnetic body, reset springs, two electromagnets and a containing cavity composed by connecting a shell body and a nozzle connection end cover, the containing cavity is divided intoan L cavity and an R cavity by the extrusion plunger piston, the two electromagnets are installed on two sides of the extrusion plunger piston correspondingly and are connected through the reset springs, an inlet of the shell body is connected with the L cavity and the R cavity through flow passages with one-way valves correspondingly, the L cavity and the R cavity are also connected through the flow passages with the one-way valves, and the nozzle connection end cover is internally provided with an outlet flow passage. According to the extrusion-type pulse jet flow generating device based onthe electromagnetic drive, the extrusion plunger piston is made to move in the left and right directions inside the containing cavity by means of the manner that the two electromagnets alternately generate magnetism, and then periodic extrusion is applied on the outlet flow passage to generate the pulse jet flow, pressure pulsation of a required pump delivery system can be greatly reduced, stepless frequency modulation can be performed on the pulse jet flow in a certain range, and feasible technical guarantee is provided for the application and research of pulse water jet flow.