Stinging urine, frequent urination and bleeding after intercourse often occurs in women and is a manifestation of acute cystitis in women. The main reason is that the female urethra is closer to the vaginal opening, and the female urethra is shorter, wider and straighter, which can easily lead to bacteria and other pathogenic microorganisms entering the female urethra during intercourse, thus causing urethral infection and retrograde upward causing acute cystitis. Patients with acute cystitis usually experience frequent urination, urgent urination, painful urination, and in severe cases, this can lead to symptoms such as hematuria in the naked eye. When a patient has stinging urine, frequent urination and bleeding after intercourse, it is recommended to go to the hospital promptly and clarify whether it is acute cystitis based on the corresponding clinical symptoms as well as urine routine and other examination results. If a large number of red blood cells and white blood cells are found in the urine routine, a clear diagnosis can be made. At this time, antibiotic treatment should be preferred, such as taking cephalosporin antibiotics such as cefaclor, cefuroxime, etc., or quinolone antibiotics such as norfloxacin, ofloxacin, etc., under the guidance of a doctor, and can also be supplemented with Chinese medicines such as Yinhua Urethralin tablets for treatment, and most patients have a better prognosis. In addition, patients with acute cystitis need to pay attention to a light diet, and good personal hygiene and cleanliness, daily change of underwear, use toilet paper to wipe from front to back after urination and defecation to prevent aggravation of pollution. Also drink more water and urinate more often to help the treatment of the disease, and try to avoid intercourse during treatment to prevent cross-infection.