Bacterial vaginitis and trichomoniasis are the most common vaginal infections. Trichomonas vaginitis is caused by a trichomonas infection, and is characterized by foamy leukorrhea, and significant vulvovaginal itching, accompanied by a burning sensation in the vagina. Bacterial vaginitis is often seen in sexually active women, and is more commonly characterized by an increase in leukorrhea, accompanied by vaginal discharge with a fishy odor. For the judgment of these two diseases, in addition to clinical symptoms, the most important thing is to do the white belt test, white belt test can clearly understand the specific situation of vaginal inflammation. However, clinically also encountered trichomonas and bacterial vaginitis mixed infection, because these two infections and anaerobic bacteria are related. For patients with mixed infections, the methods and principles of treatment will not be too different, as long as the systematic use of medication, the later recovery will be better.