The invention relates to a pore plate assembly used for a double-component thruster, in particular to a throttle control pore plate assembly used for the double-component thruster and belongs to the technical field of spacecraft space propelling. The pore plate assembly is suitable for adjusting flow resistance in a propellant channel of the spacecraft attitude control double-component thruster. A sealing gasket is deformed under pressure to guarantee sealing through a micro cone end face frustum, a pressure bearing gasket exerts certain pressure on a pore plate through elastic deformation, the position of the pore plate is fixed, and propellant is prevented from flowing through a cavity of the outer circle of the pressure bearing gasket to a certain degree, so that the performance of the thruster is affected.