The invention discloses equipment for automatically adjusting a jewelry shape, comprising a bearing base, wherein a jewelry supporting mechanism is arranged in the center position of the upper surface of the bearing base; an automatic adjusting mechanism is arranged in the position, positioned at the outer side of the jewelry supporting mechanism, on the upper surface of the bearing base; the lower surface of the bearing base is provided with a fixing mechanism. The equipment disclosed by the invention has the beneficial effects that the operation is quite simple, the equipment is suitably used at home, the shape adjustment is conveniently realized, the equipment can be adapted to jewelries with different sizes, and the fixing effect is excellent.