The remaining urine after urination may be caused by urethral problems, prostate problems, etc. There are different treatments for different diseases, including the application of medication and surgical treatment. 1. Urethral problems: The residual urine after urination may be caused by urethritis, urethral stenosis and other urethral problems. It can be treated by taking medicines under doctor’s guidance, such as levofloxacin and erythromycin. Patients with urethral stenosis need surgical treatment. In daily life, it is recommended to drink more water, regular work and rest, light diet, maintain a happy mood, avoid spicy and greasy stimulating food and excessive tension. 2. Prostate problems, such as prostate enlargement and prostatitis, may also lead to residual urine after urination. It is recommended that patients seek medical advice and take medication under the guidance of a doctor, such as tamsulosin, levofloxacin and cefotaxime. Patients should live a regular life, exercise properly, keep the genital area dry and clean, and avoid excessive masturbation and prolonged sitting still. It is recommended that patients go to a regular medical institution in time, scientific treatment to avoid delays in the condition, and follow the doctor’s instructions to take medication.