The invention discloses a two-position three-way electromagnetic pressure stabilizing valve. The two-position three-way electromagnetic pressure stabilizing valve comprises a valve body. The valve body is provided with an air inlet and an air outlet. An air guide hole communicating with the air outlet is formed in the valve body. A pilot assembly used for controlling the air guide hole and the airinlet to communicate or not to communicate with each other is arranged on the valve body. The valve body is further provided with a valve hole. The inner end of the valve hole communicates with the air guide hole. A one-way valve is arranged in the middle of the valve hole. A valve seat is fixedly connected to the outer end of the valve hole and provided with a slim hole. The valve hole communicates with the atmosphere through the slim hole. A pressure relief valve is arranged in the valve seat. The two-position three-way electromagnetic pressure stabilizing valve is simple and reasonable instructure and low in manufacturing cost; when the pressure of the air inlet is higher than the rated pressure of equipment, primary pressure relief is achieved through the cooperation of the one-way valve and the slim hole; and when the pressure of the air inlet is further increased, rapid pressure relief is achieved under the pressure relief effect of the pressure relief valve, and thus the two-position three-way electromagnetic pressure stabilizing valve has a good pressure stabilizing effect.