The present invention provides an aqueous patch. In the manufacturing process of the aqueous patch, particularly in spreading process and ripening process, gel strength of aqueous adhesive base is retained appropriate state. Furthermore, about end formulation, it can show optimum stickiness for stick to the skin. The aqueous patch is characteristics by containing higher fatty acid, which is liquid at ordinary temperature and having viscosity (mPa‧s, 20℃) of 1000 or above, as crosslinking modifier in aqueous adhesive base that is with water-soluble polymer for principal component. The higher fatty acid is isostearic acid and blending quantity thereof is 1 to 10 wt%.提供一種水性貼附劑,其係於水性貼附劑的製造步驟,尤為塗展(spreading)步驟、及熟成步驟中,水性黏著基劑的凝膠強度被保持於適當狀態,且關於最終製劑,係可顯示最適合黏著於皮膚的黏著性;其特徵係在以水溶性高分子為主成分的水性黏著基劑中,含有常溫下為液體且黏度為1000(mPa‧s、20℃)以上之高級脂肪酸作為交聯調整劑,該高級脂肪酸係異硬脂酸,且其摻混量為1~10重量%。