Controllable slow-release patch for medicine

The invention discloses a medicine controllable slow-release patch which comprises a patch body and a permanent magnet, and the patch body comprises a medicine carrying part, a connecting part, an adhesion part and a protective layer wrapping the outside; the medicine carrying part comprises a medicine carrying layer and a ferromagnetic layer, the medicine carrying layer is used for carrying medicine, and the ferromagnetic layer is matched with the permanent magnet and used for controlling the medicine release rate; the adhesion part is arranged on the periphery of the medicine carrying part, and the adhesion part is connected with the medicine carrying part through the connecting part; the protection layer wraps the medicine carrying part, the connecting part and the adhesion part, and the position, opposite to the medicine carrying part, of the middle of the protection layer is of an inwards-concave structure with the thickness smaller than that of other positions; the medicine controllable slow-release pat