Pus-like discharge from the vagina may be caused by cervicitis, gonorrheal vaginitis, trichomoniasis, as well as pus in the uterine cavity and other causes. 1. Cervicitis: Cervicitis may be caused by Neisseria gonorrhea, Chlamydia trachomatis infection, or vaginal flora disorders, hormone level imbalance and other factors. Patients will have yellowish or purulent leukorrhea, abnormal vaginal bleeding, pain during sexual intercourse and other manifestations, thus patients will have the symptom of pus-like vaginal discharge. 2. Gonococcal vaginitis: Gonococcal vaginitis may be caused by gonococcal infection. The patient will have increased vaginal discharge, and the discharge is pus-like leukorrhea, thus the patient will have the symptom of pus-like discharge from the vagina. 3. Trichomonas vaginitis: Trichomonas vaginitis is mainly caused by Trichomonas vaginalis infection, and the main symptoms of patients are increased vaginal discharge, itching of the vaginal opening, and the discharge is purulent or thin foamy, so the patients will have pus discharge from the vagina. 4. Others: patients with pus in the uterine cavity, foreign body in the vagina or bacterial infection complicated by vaginal cancer or cervical cancer may also have pus discharge from the vagina. It is recommended that patients should consult doctors in time when they have pus discharge from the vagina, and the doctors will choose appropriate treatment after clarifying the cause of the disease.