A rotten egg smell in the vagina is usually seen in bacterial vaginitis. Anaerobic bacteria can produce amines while multiplying, hence the rotten egg smell. You should go to hospital for routine examination of leukorrhea in time to further clarify the diagnosis for treatment. 1. examination: perform smear examination of vaginal secretion, take a small amount of vaginal secretion and apply it on a glass slide, mix it with saline, then look for clue cells under high magnification microscope, if the number of clue cells under the microscope accounts for more than 20% of squamous epithelial cells, bacterial vaginitis can be diagnosed. 2. treatment: treatment options Anaerobic drugs, systemic and local, such as metronidazole, tinidazole, clindamycin, etc. During the treatment period, intercourse should be prohibited. Pay attention to keep the vulva clean and hygienic, change the underwear regularly, wash the worn underwear, scald it with boiling water and expose it in the sun, and pay attention to disinfection. Consult your doctor about the use of the above drugs and do not apply them on your own. After the treatment is finished, you should review the routine of white belt in time to understand the treatment of vaginitis. 3. Precautions: Patients with bacterial vaginitis should have a light diet and take appropriate vitamin supplements to improve the body’s resistance and strengthen the ability to resist diseases. Patients should also strictly quit smoking and drinking alcohol, drink more water appropriately, pay attention to personal hygiene, and avoid staying up late and straining.