Pain relieving patch

The utility model provides a pain relieving patch, which relates to the field of medical apparatus and instruments, and comprises a sheet layer, a back shell and a front shell, the sheet layer is composed of the back shell and the front shell, both sides of the front side of the back shell are provided with through holes, a heating layer is installed inside the back shell, electrolyte is stored inside the heating layer, and the back shell is provided with a through hole. A cushion layer is installed on the back face, close to the heating layer, in the back shell, plaster adheres to the interior of the surface of the back shell, then heat transfer is conducted on the back shell through the heating layer, so that the pain position is heated while the plaster is pasted, the absorptivity of the plaster is better, meanwhile, the pain of a patient can be relieved, the temperature can be automatically adjusted and monitored, and the pain relieving effect is good. The safety of a patient during use is guaranteed, the