Vaginal discharge is from the vagina. Vaginal discharge commonly known as leucorrhea is a mixture of vaginal mucosal exudate, cervical and endometrial glandular secretions. Normal leucorrhea is mostly white, pasty or slightly sticky, while ovulation is clear, snotty and without vulvar itching. The causes of white discharge from the vulva are as follows: 1. bacterial vaginitis, the leucorrhoea is off-white, with a fishy smell and a burning sensation. 2. mycotic vaginitis, the leucorrhoea is bean curd-like or curd-like, while the patient is accompanied by vulvar itching. 3. trichomonas vaginitis, the leucorrhoea is foamy and yellowish-green, often accompanied by unbearable vulvar itching. 4. vulvovaginitis and endometritis, the leucorrhoea is brown, watery, with a musty smell. 5. When the cervicitis or vaginal infection is inflamed, the leucorrhea is gray, bloody, thin, may be a small amount, may be a large amount, smells bad and unpleasant. If you have the above abnormalities, go to the hospital in time.