The invention discloses a shaftless edge tangential-rotating door, which relates to a rotating door without a door shaft. An upper rail 1 corresponds to a ground rail 7. The upper rail and the ground rail are respectively formed by two straight section parts which are respectively provided for the outer side of a door leaf 3 to move tangentially or for the inner side of the door leaf 3 to move horizontally, wherein the two straight section parts keep the identical included angles. The door leaf 3 moves horizontally and slides inwards simultaneously along the upper rail 1 and the ground rail 7, the opening method is unique, the structure is simple, the installation is convenient, the construction cost is low, the opening and the closing are flexible and labor-saving, the load bearing is balanced, the maintenance is facilitated, the structural deformation is avoided, the labor intensity is reduced, the time for installation and work is effectively reduced when the shaftless edge tangential-rotating door is used as a garage door, the civil engineering investment is saved, the wind resistance function is obvious, no external space is occupied, a vehicle can be caused to turn at the same time of leaving, the vehicle line haul hour is saved, and the shaftless edge tangential-rotating door is particularly suitable to be used for a firefighting and redeployment garage. In addition, according to the need, the shaftless edge tangential-rotating door can be additionally provided with an electric device, a remote control device and the functions of preventing thieves, breaking and bullets.