The possible reasons for girls’ buttocks to stink are as follows: 1. poor personal hygiene: it may be because the patient does not bathe often, sweats more locally, and has relatively obvious exudation, which finally leads to stink. 2. disease: it may also be due to related diseases, such as perianal abscess, anal fistula, anal fissure, etc. 3. menstrual period: girls’ buttocks stink may also be due to menstruation, and covered more tightly, which finally leads to stink. Finally, the menstrual blood stinks. If a girl’s buttocks are found to be smelly, what is the specific cause, it is recommended to go to a regular specialist hospital for systematic examination and clear diagnosis, and then timely symptomatic treatment according to the different causes. It is advisable to consult a specialist for specific treatment options, which are relatively reliable.