Adjustable mask for pneumology department

The adjustable mask for the pneumology department comprises a mask body and a limiting and fixing mechanism, a connecting block is fixedly installed on the outer side of the mask body, wire through holes which are communicated with each other are formed between the left side and the right side of the connecting block, and a wearing belt body penetrates through the inner sides of the wire through holes. And a locking slot is formed in the inner side of the wire through hole. According to the adjustable mask for the pneumology department, by arranging the sliding connection block, when a user uses the mask, the user can wear the mask on the face in advance, then the user can pull the wearing belt body forwards, and when the mask body is tightly connected with the face of the user, the user can wear the mask on the face of the user. A user can push a sliding connection block to the inner side to complete locking and fixing treatment on the wearing belt body, and at the moment, the user can push a sliding connect