Disclosed is a safe, transdermal absorption preparation useful in the treatment of fungal infections, having excellent skin permeability and strong antifungal activity, and greatly contributing to a patient's quality of life. The disclosed transdermal absorption preparation contains 4-{3- 4-(3-{4- amino (imino) methyl phenoxy} propyl)-1-piperidinyl propoxy} benzamidine, or a salt thereof, and a transdermal absorption enhancer. EP2623102A1