Through progress in micro-machining technologies, the present invention provides an auxiliary tool with which a micro-needle array, on which a plurality of micro-needles are mounted, is more reliably injected into the skin. This skin tight-binding device is provided with a tight-binding band, and a hole formed in the tight-binding band, wherein the hole forms a micro-needle patch injecting part when the tight-binding band is fixed to the skin, and the skin tight-binding device is further provided with a fixing tool for fixing the tight-binding band to the skin.
