The invention discloses a revolving door, and belongs to the technical field of truss-type net cages. The revolving door comprises a door body, a vertical column, a clamping device, a first abrasion-resistant device, a second abrasion-resistant device, a third abrasion-resistant device, a fourth abrasion-resistant device and a fifth abrasion-resistant device; wherein the first end of the verticalcolumn is connected with the first end of the door body through a first bearing device, the second end of the vertical column is connected with the second end of the door body through a second bearingdevice, the first end of the vertical column is provided with a first flange face and a second flange face, and the second end of the vertical column is provided with a third flange face; the clamping device is connected with the first bearing device and is clamped on the first flange face and the second flange face; the first abrasion-resistant device penetrates through the first side of the clamping device and is in contact with the first flange face; the second abrasion-resistant device penetrates through the first bearing device and is in contact with the first flange face; the third abrasion-resistant device penetrates through the first bearing device and is in contact with the second flange face; the fourth abrasion-resistant device penetrates through the second side of the clampingdevice and is in contact with the second flange face; and the fifth abrasion-resistant device penetrates through the second bearing device and is in contact with the third flange face. The revolvingdoor improves the working efficiency and the service life.