Leukorrhea is a vaginal secretion. Vaginal secretions are a mixture of different substances from different parts of the female reproductive system, such as secretions from the vestibular glands, cervical glands, endometrium, and exudate from the vaginal mucosa, and detached vaginal epithelial cells, commonly known as leukorrhea. Leukorrhea is divided into physiological and pathological, pathological leukorrhea is often manifested as leukorrhea abnormality, in the daily if pathological leukorrhea scarcity also need to go to the hospital as early as possible for examination and diagnosis. 1, purulent leukorrhea: yellow or yellow-green color, sticky or foamy, with a foul smell, mostly due to vaginal inflammation, including trichomonas vaginitis is the most common, and there is a lot of vulvar scratching. It can also be seen in chronic cervicitis, senile vaginitis, endometritis, uterine effusion or foreign body in the vagina. 2, cheese-like leukorrhea or tofu-like leukorrhea: most of the typical phenomenon of mycosis fungoides vaginitis, often accompanied by severe vulvar itching. 3. Bloody leukorrhea: if there is blood mixed in the leukorrhea, we should be alert to the possibility of cervical cancer, endometrial cancer and other malignant tumors. However, cervical polyps, cervical erosion, submucous fibroid, dysfunctional uterine bleeding disease, urethral caruncle, senile vaginitis and other benign lesions can also lead to bloody leukorrhea. Intrauterine device caused by less is bloody leukorrhea is also more common. 4.Yellow watery leukorrhea: it mostly occurs after persistent vaginal bleeding, with a large amount of purulent and foul-smelling leukorrhea discharged from the vagina, which should be considered as advanced cervical cancer, endometrial cancer or submucosal leiomyoma with infection in the first place. Those with paroxysmal discharge should pay attention to the possibility of fallopian tube cancer.