Insufficient urodynamics after prostate surgery or can not urinate may be due to postoperative urethral edema, urethral stenosis, glandular residual recurrence and other reasons. 1. urethral edema: insufficient urinary power after prostate surgery or urine may be due to postoperative urethral edema, in this case can be given again indwelling urinary catheter, and the use of azithromycin, amoxicillin and other antibiotic drugs for treatment. 2. Urethral stenosis: it may be caused by urethral stenosis or bladder neck contracture after prostate surgery, patients need to perform cystoscopy for a clear diagnosis, and can be treated by urethral dilatation through urethral dilatation device, which reaches from the urethral orifice into the urethra and extends all the way to the bladder to dilate the urethra, and in severe cases, a second surgery of prostate is needed. 3. Gland residual recurrence: Insufficient urinary power after prostate surgery or urine may be due to the gland residual or recurrence after prostate surgery, the patient can be treated by a second surgery to remove the residual gland or recurrence of the gland. Urodynamic insufficiency after prostate surgery or can not urinate patients are recommended to go to the hospital in time to check, clear cause, under the guidance of the doctor for standardized treatment.