Leukorrhea can be divided into physiological leukorrhea and pathological leukorrhea. Physiologic leukorrhea may occur during ovulation, before menstruation, and after pregnancy. This physiological leukorrhea is limited to the increase in the amount of leukorrhea, the color, texture and smell of leukorrhea are normal, and the patient does not have vulvar itchiness, local redness and swelling and other discomforts, and does not need any treatment. Pathological leukorrhea increase is mostly caused by gynecological inflammatory diseases and gynecological oncological diseases. In this kind of leukorrhea, not only the amount of leukorrhea increases, the color of leukorrhea, the smell of leukorrhea, the texture of leukorrhea are all abnormal, and the patient may have vulvar itching, local redness, swelling, pain and other discomforts. It is necessary to test the leukorrhea and do gynecological examination to find out the cause of the lesion as well as the location of the lesion, and then treat the symptoms.