Hydrogel patch of integrated microneedle and preparation method of hydrogel patch

The invention belongs to the technical field of skin care products, and particularly relates to a hydrogel patch of an integrated microneedle for eyes and a preparation method of the hydrogel patch. The hydrogel patch of the integrated microneedle is sequentially provided with a backing layer, a gel layer, an isolation layer, a needle body layer and a needle body protection layer from bottom to top. The backing layer is a patch base material of hydrogel; the gel layers are positioned at two ends of the backing layer; the isolation layer covers the gel layer; the needle body layer is positioned on the isolating layer between the two gel layers; and the needle body protection layer covers the needle body layer. The gel layers are positioned at two ends between the backing layer and the isolating layer which are consistent in size to form a structure with two layers in the middle and three layers at two ends; and the isolating layer is provided with an easy-to-tear line. The integrated patch prepared by the inve