The operation method of catheterization is as follows: after cleaning and disinfecting the vulva and urethral opening, gently insert the catheter and pull it out after emptying the urine. After spinal cord injury, urination is often restored through indwelling catheter, intermittent clean catheterization and medication. 1. Indwelling urinary catheter: it is the first measure used when bladder dysfunction occurs, and generally requires the patient to hold urine for 2~4 hours, and decide when to open and close the catheter according to the amount of urine. Regular water intake is required to prevent urinary tract infection. 2. Intermittent clean catheterization: compared with indwelling catheterization has a great advantage, need to catheterize 4~6 times a day, can be carried out by family members, if the patient’s function exists can be gradually restored. 3. Medication: medication can be used to help the patient regain function. Commonly, such as due to the high tension of the urethral muscle, resulting in patients with urinary obstruction, can be taken under the guidance of the doctor to reduce muscle tone drugs to help patients urinate. It is recommended that patients under the guidance of a professional doctor for treatment, to avoid the adverse consequences.