Covering device for oral and maxillofacial surgery operation

The invention discloses a covering device for an oral and maxillofacial surgery operation. The covering device comprises two mutually parallel baseplates and a face mask, wherein upright rods perpendicular to the surface of each baseplate are arranged at the two ends on the surface of the baseplate; the upright rods are telescopic; the top ends of the upright rods at the two ends of each baseplate are connected through a cross rod; the side surface of each cross rod is sleeved by rod sleeves; a connecting rod is welded on the side surface of each rod sleeve; the end, away from each rod sleeve, of the corresponding connecting rod is connected with the side surface of the face mask; the front end of the face mask is flat; an arc-shaped groove is formed in the bottom in the front of the face mask; a mounting groove is formed in the upper surface on the back side of the face mask; an arc-shaped glass plate is mounted in the mounting groove; a first guide tube and a second guide tube are respectively arranged on t