1, early bladder function training Early bladder function training and care can significantly promote the recovery of bladder function after crestal medullary injury, and improve the quality of life and physical and mental health of patients, and is worthy of clinical promotion and application. In patients with sacral medullary injury, patients with no reflex of the detrusor muscle and no spasm of the urethral sphincter, classical bladder function training methods include: ①Crede’s method is to massage the bladder by hand for 3 to 5 min, using the fist to press from 3 cm below the umbilicus to roll in the direction of the pubic bone, with slow and gentle movements, while the patient is instructed to add abdominal pressure to help urine expulsion. The Valsalva breath-holding method is to have the patient sit in a seated position, lean forward, hold the breath, increase abdominal pressure, and make downward forceful defecation movements to help urine expulsion. The training method for patients with injuries above the sacral medulla but with the presence of the detrusor reflex: the suprapubic tapping method is to tap rhythmically with the fingers in the suprapubic area, 7 to 8 taps each time, with an interval of 3 s and 7 to 8 taps again, repeatedly for 2 to 3 min. When using the above techniques for urination, attention should be paid to: the Crede method and the Valsalva method should be operated with strict control of the timing of the pressure to urinate to avoid the bladder being highly The Crede method and the Valsalva method should be performed with strict timing to avoid bladder rupture due to squeezing during high bladder filling, and should be used with caution in patients with hyperreflexia of the detrusor muscle and non-coordinated detrusor sphincter. The suprapubic percussion method of urination is prone to urinary reflux causing hydronephrosis, so the timing of urination should be mastered. Intermittent catheterization The specific practice of intermittent catheterization is to catheterize once every 2 to 4 hours, without leaving a catheter in place. A slightly thinner catheter should be used for catheterization, and the tube should be lubricated with sufficient amount of paraffin oil when inserted to avoid damage to the urethra or edema of the urethral mucosa caused by repeated intubation. The patient should be instructed to urinate on his own between intubations. Intermittent catheterization should be stopped only when the residual urine volume is less than 80 mL or 20% of the bladder capacity. Clinical applications have shown that IC can greatly reduce complications such as urinary tract infections and help maintain bladder compliance, protect renal function, and play an important role in helping to restore voluntary bladder voiding, making it a common bladder management method for patients with acute and chronic crural injuries.