Air respirator with pressure head-up system

The invention discloses an air respirator with a pressure head-up system. The air respirator comprises an air capacity detecting device for an air storing bottle, and an air capacity display device for the air storing bottle, wherein detecting data is transferred between the detecting device and the display device in a wireless manner; a wireless data delivery module is arranged in the detecting device, and a wireless data acceptance module is arranged in the display device; the two modules are connected in a wireless manner after signal matches; the display device is arranged in a face guard of a breathing apparatus in a clamping and connecting manner to be fixed between a face guard window and a respirator of the face guard to be capable of being used with different kinds of face guards in a combined manner; the contact position of the display device and the face guard window is arranged into the shape of a spherical surface jointed to the face guard window; the detecting device is connected with the air storing bottle through a high pressure gas pipe; the detecting device is also provided with a falling warning device for users.