The present invention provides an external pasting agent containing felbinac, which shows high release ability and less stimulation to skin, and can display high stability of drug. The external pasting agent is characterized in that does not contain L-menthol, and felbinac having average particle diameter of 5μm and more and less than 100μm is dispersed and blended in an adhesive base comprising styrene-isoprene-styrene block copolymer, alicyclic saturated hydrocarbon resin, softener, and diethyl sebacic acid. Specifically, the external pasting agent is characterized that the felbinac having average particle diameter of 5μm and more and less than 100μm is dispersed and blended in the adhesive base comprising 10~30wt% of styrene-isoprene-styrene block copolymer, 10~50wt% of alicyclic saturated hydrocarbon resin, 10~75wt% of softener, and 0.1~10wt% of diethyl sebacic acid.本發明提供一種顯示高藥物釋放性，且皮膚刺激性低、可發揮高藥物穩定性之含有聯苯乙酸之外用貼附劑，係一種以在不含有L-薄荷醇，而包含苯乙烯-異戊二烯-苯乙烯嵌段共聚物、脂環族飽和烴樹脂、軟化劑及癸二酸二乙酯之黏著基劑中分散摻混有平均粒徑為5μm以上且小於100μm的聯苯乙酸為特徵之含有聯苯乙酸之外用貼附劑，具體而言，係一種以在包含苯乙烯-異戊二烯-苯乙烯嵌段共聚物10~30重量%、脂環族飽和烴樹脂10~50重量%、軟化劑10~75重量%、癸二酸二乙酯0.1~10重量%之黏著劑基劑中分散摻混有平均粒徑為5μm以上且小於100μm的聯苯乙酸0.1~10重量%為特徵之含有聯苯乙酸之外用貼附劑。
