For years the causes of pain in the labia minora after urination include urethritis, vulvovaginitis, etc. The treatment includes medication, such as antibiotics, surgical treatment, etc., and the specifics need to follow the doctor’s instructions. 1. Urethritis: Urethritis refers to acute and chronic inflammation caused by gonococcus or non-gonococcus bacteria. Gonococcal urethritis is often characterized by urinary urgency, frequent urination, painful urination and urethral discharge, etc. Non-gonococcal urethritis is often characterized by increased urethral discharge and leukorrhea. Treatment includes medication, such as ceftriaxone, erythromycin, etc. If the condition is serious, it can be treated by surgery, such as urethral endoscopy. 2. Vulvovaginitis: vulvovaginitis refers to inflammation of the vulvar skin or mucous membrane caused by various factors, and the main clinical symptom is itching, swelling and pain of the vulva, which is aggravated during urination and defecation. Treatment includes medication such as metronidazole, 1:5000 potassium permanganate sitz baths, etc., and severe cases can be treated by surgical incision and drainage. In addition, the specific use of the above drugs should be carried out under the guidance of a doctor, do not use on their own at will. There may be other causes of pain in the labia minora after urination, so it is necessary to consult a doctor in time, under the guidance of the doctor in order to clarify the specific causes of the disease.