An antibacterial composition for external application, particularly, a remedial formulation for external use containing fluconazole is disclosed. The formulation comprises a base material, 0.1-5.0 percent by weight of fluconazole and 1.0-40.0 percent by weight of any one compound selected from a group consisting of fatty acid, fatty alcohol, higher fatty acid ester and lower alcohol based on weight of the base material. The composition according to the present invention has various advantages of a favorable absorption into a system through the skin of a human body and delivery of active material into horny layer of the skin, a reduced skin stimulation and an excellent stability. Therefore, the composition is efficiently useable in a medical treatment application for dermatomycosis-related infectious diseases including tinea pedis, tinea corporis, tinea cruris, tinea versicolor and/or candidiasis and the like.