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Objective To evaluate efficacy of intermittent urethral catheterization in the treatment of intractable diabetic neurogenic bladder.Method 41 patients with intractable diabetetic neurogenic bladder were randomly divided into study group(n=21) and control group(n=20).Study group received intermittent urethral catheterization and control group received routine therapy.Therapeutic effect of two groups was compared.Result Total effective rate was 90.5% and 40.0% for study group and control group respectively(P< 0.01). In study group,area opaca of residual urine shown by ultrasound examination and number of urination decreased,urine volume increased(P