Tightness adjusting structure of respirator mask

The utility model belongs to the technical field of breathing machine auxiliary equipment, and particularly relates to a tightness adjusting structure of a breathing machine mask, which comprises a breathing machine mask body, and the left side and the right side of the breathing machine mask body are respectively clamped with an adjusting belt I for adjusting the tightness degree through a connecting part I; the upper end of the respirator mask body is connected with a second adjusting belt used for adjusting the tightness degree through a second connecting part, the first adjusting belt and the second adjusting belt are both connected with a headrest, and the headrest comprises a cloth liner provided with a notch. According to the breathing machine mask, the first adjusting belt connected with the first connecting part in a clamped mode and the second adjusting belt connected with the second connecting part in a clamped mode are arranged, so that the breathing machine mask body can be conveniently detached