The odor during menstruation indicates that there are gynecological diseases, the most common of which are endometritis, pelvic inflammatory disease, cervicitis and vaginitis. In the physiological period can smell odor, that the body of bacterial infection is more serious, leading to bacterial infection and usually have chronic gynecological diseases, but not timely treatment or treatment is not complete, such as usually have small abdominal pain or abnormal increase in leukorrhoea, not timely standardized treatment, in the menstrual period will be more serious. If long-term lack of hygiene, staying up late, fire, as well as eating spicy, oily food, it will lead to women’s body dampness and heat downstream, will also occur menstrual odor or abnormal leukorrhea. Sometimes irrational choice of sanitary napkins or lack of hygiene and changing of sanitary napkins are also common causes of menstrual odor, so it is necessary to consider various aspects.