Pressure gauge structure

The utility model discloses a pressure gauge structure, comprising a bearing piece with an air jointing section in the middle, the external circumferential edge of the bearing piece is extended with one section of leaning part, and the leaning part is leaned against to a metal membrane with multiple ring-shaped folds on one surface; the metal membrane is provided with a middle hole matched with a pipe section group, and a screw base is sheathed at the external circumference of the pipe section group; a spiral spring is sheathed at the external circumference of a rotating piece, one end of the spiral spring is held on the rotating piece, and the other end thereof is held at one side adjacent to a supporting piece which is arranged on the leaning part of the bearing piece in a covering way; a bearing sleeve is arranged between the leaning part of the bearing piece and the metal membrane covered on the leaning part, and an indented folding frame edge is formed at the lower section of the supporting piece which i