Mask for correcting excessive ventilation

The utility model provides a mask for correcting excessive ventilation, which comprises a mask body, an air suction hole, an air storage bag, a carbon dioxide detection component and an exhaust hole, and a functional interface is arranged at the front end of the mask body; the air suction holes are formed in the two sides of the mask body. The air storage bag is communicated with the mask body through the functional interface; the carbon dioxide detection part is arranged on the functional interface and is used for detecting the concentration of carbon dioxide in the mask body and the air storage bag; the exhaust hole is formed in the air storage bag; the suction hole and the exhaust hole can be opened or closed. According to the mask provided by the utility model, a patient can repeatedly inhale gas with higher carbon dioxide concentration, which is exhaled by the patient, so that the hyperventilation syndrome is relieved and treated; the mask body is further provided with a carbon dioxide detection part whi