Abstract: To evaluate the factors acted on the shunting normal pressure hydrocephalus (NPH). Methods： The efficacy of shunting was retrospectively analyzed according to 31 NPH patients′ symptoms, medical history, age and test of draining cerebrospinal fluid（CSF） with lumbar puncture. Results： Seventeen patients got better after test of draining CSF with lumbar puncture, no one died. The total response rate was 70.9%, and the response rate of patients with gait disturbance was 72.7%, of patients with amentia was 44.4%, of patients with urine incontinence was 40%. Conclusion： Young patients with gait disturbance and short course of disease have good or excellent response to surgery, whereas patients with amentia or urine incontinence have poor response to surgery.

Key words: Normal pressure hydrocephalus, Ventriculoperitoneal shunt1