The invention relates to a respirator for emergency escape breathing devices, which comprises a rubber part for contact with the human body, a plastic fixed part is arranged outside the rubber part, a plurality of plugs are arranged on the rubber part, the plastic fixed part is provided with a plurality of through holes in which the plugs are fitted, the nasal mask part of the respirator is provided with an exhaust valve, the mouth mask part of the respirator is provided with an inhalation valve seat for connection with an air tube, an exhaust valve plate is arranged on the exhaust outlet in the exhaust valve, a pressing plate is arranged on the exhaust valve plate, a bonnet is arranged on the outer side of the pressing plate and connected with the plastic fixed part, and a spring which can prevent the outside air from flowing in is arranged between the bonnet and the exhaust valve. The respirator for emergency escape breathing devices uses the plastic fixed part to support the rubber part in contact with the mouth and nose of the human body, so that the attachment of the respirator is tighter, and thereby a user can inhale the air in an emergency escape breathing device well. The structure of the respirator is simple, and the attachment of the respirator is tighter.