Microcurrent is used to stimulate negatively charged ions on the electrode surface to be introduced into the pain site in the form of directional bioelectricity.

The micro-electric drug-introduction therapeutic patch changes the permeability of the skin through the "pushing effect" of the micro-electric field voltage gradient generated by the "micro-electric ion generation and membrane conduction technology", making it easier for drugs to penetrate and generate a directional driving force on drug molecules., promoting charged drugs to penetrate into the skin; the negatively charged ions generated by the micro-current can strengthen the activity of cortical cells and actively accept and activate drug molecules.