The utility model belongs to the technical field of bracelet processing, especially, relate to a bracelet tensioning cover, including rotating member, tensioning piece, mounting and connecting piece, the rotating member surface is equipped with the helix, tensioning piece cover is located the rotating member with outside the mounting, the tensioning piece be equipped with with rotating member engaged with helix, circumference is equipped with the appearance on the mounting the gliding slide of tensioning piece, rotating member, tensioning piece, mounting pass through connecting piece fixed connection. The utility model discloses simple structure, reasonable in design, convenient operation, labour saving and time saving, the frock that no longer needs to be changed during not unidimensional bracelet tensioning has reduced the processing cost.