PROBLEM TO BE SOLVED: To provide an antifungal external composition, the antifungal external composition acting on a fungus 5 present on the surface of a skin area 10, and further a pharmaceutical component being sufficiently delivered to a skin tissue 20 and also a subcutaneous tissue 40 where the fungus 5 is present, effectively acting directly on the fungus 5, and thereby exhibiting significantly excellent antimicrobial performance.SOLUTION: Provided are: an antifungal external composition at least containing a terbinafine-based antifungal agent exhibiting antifungal efficacy of at least one of terbinafine and terbinafine hydrochloride and salicylic acid having skin penetration-facilitating efficacy exhibiting efficacy facilitating skin penetration of an antifungal agent and an application method of the antifungal external composition.COPYRIGHT: (C)2014,JPO&INPIT【課題】 抗真菌外用組成物が、皮膚領域10の表面に存在する真菌5に作用するとともに、更に、薬効成分が真菌5の存在する皮膚組織20および皮下組織40にも効率よく送達され、薬効成分が有効に真菌5に直接に作用し、これにより、著しく優れた抗菌性能を奏する抗真菌外用組成物を提供する。【解決手段】 少なくとも、テルビナフィンと塩酸テルビナフィンのうちの少なくとも一つの抗真菌効能を奏するテルビナフィン系抗真菌剤と、抗真菌剤の皮膚浸透を促進する効能を奏する皮膚浸透促進効能を有するサリチル酸と、を含有する抗真菌外用組成物、及び、抗真菌外用組成物の適用方法。【選択図】図1