Before inserting vaginal effervescent tablets into the vagina, you must wash your vulva and then put the vaginal effervescent tablets at the vaginal opening with disposable sterile gloves. The main ingredient of vaginal effervescent tablets is metronidazole, which is used for the treatment of bacterial vaginitis and trichomoniasis. Before using the medication, you must go to the hospital for a routine test of secretion to see what kind of pathogenic bacteria is infected, and then use the medication for the symptoms. After the clinical symptoms have disappeared, the secretion test should be done after the next menstrual period to see if the pathogenic bacteria are cured. During the medication period, you should pay attention to personal hygiene, wear cotton underwear, and usually pay attention to your life to start ironing your underwear, exposing it to the sun and changing it once a day. Patients should keep the vulva clean and dry, during the treatment period, prohibit eating spicy, stimulating and fried food, prohibit sexual life and tub bath.