A transdermal preparation comprising 4-{3-[4-(3-{4-[amino(imino)methyl]phenoxy}propyl)-1-piperidinyl]propoxy}benzamidine or a salt thereof and a transdermal absorption enhancer has an excellent skin permeability, has a strong antifungal activity, improves patients quality of life significantly, and is excellent in safety and useful for treating fungal infections.一種經皮吸收製劑,包含4-{3-[4-(3-{4-[胺基(亞胺基)甲基]苯氧基}丙基)-1-哌啶基]丙氧基}苯甲脒或其鹽、及經皮吸收增強劑,係具有優良之皮膚滲透性,具有強烈之抗真菌活性,顯著地改良病患之生活品質,及安全性優良且可用於治療真菌感染。