Mugwort leaves, as is widely known, are a type of Chinese herbal medicine. They predominantly exhibit a warming quality and are mainly used for foot soaks to treat ailments caused by cold-dampness and wind-cold, as well as conditions related to cold. In typical cases, athlete's foot, which is a fungal infection caused by fungi leading to inflammation, should be treated with antifungal medications, not by soaking in mugwort leaves. It's only effective for treating symptoms caused by cold conditions and wind-cold dampness, not athlete's foot. Therefore, it is recommended to choose antifungal medications for the treatment of athlete's foot. (Be sure to follow a doctor's guidance regarding specific medications.)