Indonesia is one of the countries with a tropical climate that has high temperature and humidity, a good atmosphere for fungal growth so that fungi can be found somewhere. Fungus Trichophyton rubrum is a fungal disease that attacks the nails, skin, hair. One of the preventions of this disease is by giving traditional medicines, namely clove flowers (Syzygium aromaticum) which contain chemical compounds saponins, tannins, flavonoids. Serves as an antioxidant that can prevent dermatosis. The purpose of this study was to determine the inhibition power of clove flowers (Syzygium aromaticum) on the growth of Trichophyton rubrum fungi. This research was carried out an experimental method with the Kirby Bauer method. Concentration dilution of clove ethanol extract (Syzygium aromaticum) from concentration 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%. The results of this study showed that the clove ethanol extract (Syzygium aromaticum) inhibit the growth of Trychophyton rubrum fungus from the concentration of 10% inhibition zone 14 mm, 20% inhibition zone 26 mm, 30% inhibition zone 36 mm, 40% inhibition zone 41 mm, 50% 45 mm inhibition zone, 60% 46 mm inhibition zone, 70% 48 mm inhibition zone, 80% 49 mm inhibition zone, 90% 51.0 mm inhibition zone, 100% inhibition zone of 56 mm.