Amorolfine application is mainly used for topical fungal infections, and the main active ingredient is amorolfine. Amorolfine is a topical antifungal drug, which is a broad-spectrum and highly effective antifungal drug, mainly by altering the thoracic synthesis of lipids that make up the fungal cell membrane, thus achieving antifungal effects. It is able to reduce the content of ergosterol thus causing morphological changes in fungal cell membranes and organelles to achieve antifungal effects, and has inhibitory effects on a variety of fungi, such as yeast infections, including Candida albicans and other Candida infections. In addition, it can also be used for dermatophytes, including Trichophyton rubrum, Trichophyton spp. and other dermatophytes, and has some antibacterial effect on some molds, and is mainly used clinically for nail infections caused by susceptible fungi. In conclusion, Amorolfine Rub is an antifungal agent, mainly for topical use, for fungal infections of the nails.