The examination of leukorrhea secretion includes the following aspects: First, PH value. PH value examination is an important item in the routine examination of leukorrhea, the normal vaginal PH value is between 3.8-4.4, which is weakly acidic. If the PH value rises, consider the existence of vaginitis. Second, leukorrhea cleanliness. Leukorrhea is divided into four degrees of cleanliness, the first degree, 2.degree is normal vaginal secretions, 3 degrees 4, degree is abnormal leukorrhea, suggesting vaginal inflammation. Third, the examination of pathogenic microorganisms. Pathogenic microorganisms test, if it is positive, it will be indicated by plus sign, if it is negative, it will be indicated by minus sign, which is mainly to observe whether there are trichomonas and mycobacteria. Fourth, amine test amine test. Under normal circumstances, amine test should be negative, if it is positive, it suggests the existence of bacterial vaginosis. Fifth, clue cells. Under normal circumstances, the clue cell should be negative, if it is positive, it is a specific manifestation of bacterial vaginosis.