The normal female leucorrhea is clear, transparent, odorless and small amount is normal. If the leucorrhea appears dark gray, most of them suggest vaginal inflammation. If the leucorrhea is dark gray, consider mycotic vaginitis, the discharge will be curd-like or beanbag-like, and we cannot rule out blood in the leucorrhea. The majority of them are able to improve after a week of symptomatic treatment, so pay attention to vulva hygiene and prevent infection.