1. Trichomonas vaginalis Symptoms: increased vaginal discharge and vulvar itching, vaginal discharge is milky white or yellow, sometimes purulent leucorrhea, often frothy, smelly, bloody leucorrhea in severe cases, painful urination, frequent urination, hematuria. Hazards: It can be complicated by trichomonas urethritis, cystitis and pyelitis. Since trichomonas can swallow sperm, it can cause infertility and affect sex life. 2. Pseudomonas vaginalis vaginitis Symptoms: itching of vulva, burning pain in vulva and vagina, increased vaginal discharge in the form of bean curd, sometimes accompanied by frequent urination, frequent urination, painful urination, painful intercourse, white membranous material attached to the inner labia minora and vaginal mucosa can be seen during gynecological examination, after erasing to reveal the red and swollen mucosal surface, damaged erosion surface or superficial ulcers can be seen in the acute stage. Hazards: Not easy to cure, easy to recur, causes premature birth, fetal infection and malformation, etc. 3. Bacterial vaginitis Symptoms: Increased vaginal discharge with fishy odor, grayish white, thin and foamy. Vaginal mucous membrane is congested, bleeding spots are seen scattered, vulva itching and burning sensation, foul smell in the pubic area Hazards: induce genital infection, pelvic inflammatory disease, perinephritis, painful intercourse, etc. 4. Atrophic vaginitis Symptoms: Increased vaginal discharge, yellowish, watery, purulent in severe cases, smelly, sometimes bloody or with drip bleeding, itching or burning sensation in vulva, dry pain, lower abdominal cramps, frequent urination, urgent urination, painful urination, etc. Hazards: It may cause vaginal adhesions, pus accumulation in the vagina or pus accumulation in the uterine cavity.