A positive bacterial vaginosis indicates that the patient has bacterial vaginosis, which is caused by a disturbance in the micro-ecological balance of the normal vaginal flora and is clinically characterized by increased vaginal discharge with a fishy odor, but without a significant inflammatory response. The disease is associated with multiple sexual partners, excessive vaginal douching, and reduced estrogen levels. Patients mainly present with increased grayish-white discharge with putrid or fishy odor, often aggravated after menstruation or sexual intercourse, often without conscious symptoms, and in a few cases with mild vulvar pruritus and burning sensation. After visiting the hospital, examination of the vaginal discharge may reveal clue cells (a type of cell found in bacterial vaginosis), a positive amine test (a small amount of vaginal discharge is applied to a glass slide and a few drops of potassium hydroxide solution are added to produce a fishy smell like rotten fish), and a vaginal pH of >4.5 (normal vaginal pH is below 4.5). In case of positive bacterial vaginosis, medication is required. Take oral metronidazole tablets and tinidazole tablets for anti-infection treatment as prescribed by the doctor, and give local metronidazole or tinidazole suppositories and topical clindamycin ointment for rapid treatment of local lesions. Avoid sexual intercourse during the medication period, pay attention to vulva cleanliness, change underwear daily, avoid staying up late, do not eat spicy, stimulating food, eat more fresh vegetables and fruits. If the symptoms recur, you should strengthen your physical exercise. In addition, you can give Lactobacillus vaginalis capsules to improve the microecology of the vagina.