Foul-smelling menstruation during menstruation is considered to be caused by menstrual infection. If you don’t pay attention to personal hygiene during menstruation or have sex or a bath during menstruation, bacterial infection can cause endometritis, which can lead to foul-smelling menstruation, often accompanied by increased menstrual volume, prolonged periods, abdominal pain, and menstrual pain. In case of hot weather in summer, failure to change sanitary napkins in time, coupled with sweating in summer, menstrual odor is also likely to occur. In order to avoid the occurrence of upstream infection during menstruation, it is recommended to pay attention to menstrual hygiene, change sanitary napkins in time during menstruation, wash the vulva with warm water at night, keep the vulva clean and dry, and avoid sexual intercourse and bathing during menstruation. If the menstrual odor is caused by infection, it is recommended to take oral quinolones and tinidazole for anti-infection treatment.