Sewing template and sewing method for inner layer of seamless bra

The sewing template is used for sewing the inner layer of the bra, the sewing template comprises a template body, the template body comprises a bottom plate, a pressing plate and a cover plate, the bottom plate is rotationally connected with the pressing plate, the pressing plate is rotationally connected with the cover plate, a first threading hole is formed in the bottom plate, a second threading hole and a limiting hole are formed in the cover plate, and the first threading hole is connected with the second threading hole. Avoiding holes are formed in the pressing plate, when the bottom plate, the pressing plate and the cover plate are overlapped, the tracks of the first wiring hole and the second wiring hole coincide, the first wiring hole and the second wiring hole are located in an area defined by the avoiding holes, and the limiting hole is located over the avoiding holes. The upper lining, the annular lower lining and the cups can be sewn to form the bra inner layer through the template, and the sewin