Most of the girls have bad odor caused by hot weather and hereditary factors, which can be treated by general treatment, physical therapy, surgery and other methods. 1. General treatment: if the girls with mild bad breath can take general treatment methods, such as paying attention to hygiene, keep themselves clean and fresh, to reduce the effect of bacterial growth, which can effectively improve the phenomenon of bad breath. 2. Physical therapy: girls with bad breath can also be treated by physical therapy, generally using gold micro-needle and fresh microwave. Through the photothermal effect to destroy the sweat gland organization, so as to relieve the symptoms of bad breath. 3. Surgical treatment: mainly through surgical removal of most of the underarm tissues densely covered with sweat glands, to minimize the secretion of sweat, to achieve the effect of the treatment of halitosis. Girls with bad breath should go to the hospital in time, after a detailed examination, under the guidance of the doctor to choose a suitable treatment plan and actively cooperate with the treatment.