Pneumatic pressing device for respirator mask

The utility model discloses a breathing machine mask pneumatic pressing device which comprises a mask body and an air injection pipe, an upper fixing belt and a lower fixing belt are fixedly connected to the mask body, and an attaching bag communicated with the air injection pipe is arranged on the attaching edge of the mask body. An upper air bag belt and a lower air bag belt are fixedly connected to the inner sides of the upper fixing belt and the lower fixing belt respectively and communicate with the attaching bag through communicating pipes. According to the breathing machine mask pneumatic pressing device, after the mask body roughly covers the face of a user, the upper fixing band and the lower fixing band are hooped to the head, and the attaching bag is inflated through the air injection pipe; the upper air bag belt and the lower air bag belt are synchronously inflated and swelled together with the attaching bag through the communicating pipe so as to tension the attaching bag to the face of the user,