 The study investigates the chemical composition and in vitro antifungal activity of mentha times piperida L, peppermint, essential oil against plant pathogenic fungi, revealing that peppermint yield can be used as an additive in the food industry and as an active substance in pharmaceuticals due to its antifungal properties. This article was authored by Masuma Vakili Gardeval, Hoseina Rui, Shiva Gammohamadsadi, and others.