The cleanliness of the leukorrhea is an indicator of the cleanliness of the vagina, which is determined by the number of leukocytes, Bacillus vaginalis and various types of miscellaneous bacteria contained in the vaginal discharge. The cleanliness of white belt is divided into four degrees, and the cleanliness of normal women’s white belt is usually between Ⅰ and Ⅱ degrees, and the specific degrees are as follows: 1. Ⅰ degree: under the microscope, a large number of vaginal bacilli and epithelial cells can be seen, and there are no miscellaneous bacteria and white cells, and the field of view is clean, which means the secretion is normal; 2. 3, degree III: a small amount of Bacillus vaginalis and epithelial cells can be observed in the discharge, but the number of leukocytes and miscellaneous bacteria is large, and the discharge is abnormal, indicating a mild vaginitis. If the result of the examination shows that the white belt is of degree III-IV, further examination should be done to clarify the pathogenic bacteria and to provide targeted medication. During the treatment period, it is important to pay attention to personal hygiene and avoid sexual intercourse to avoid cross-infection.