神策军是中晚唐的中央禁军,为保卫风雨飘摇中的唐王朝立下了汗马功劳;神策中尉是由宦官担任的神策军的首领,在唐后期的政治舞台上扮演着十分重要的角色。一支庞大的政府军队为什么用宦官来长期担任统帅?这种宦官统兵制度造成了什么后果?怎样评价这个制度?研读唐史的人大概都会提出这些问题, 本文就针对这些问题,提出一种答案。 Shenze Army was the Central Ban Army in the middle and late Tang dynasty, and made great achievements in defending the stormy Tang dynasty. Lieutenant Lieutenant Ceze was the leader of the Shenze Army, run by the eunuch, and played a very important role in the post-Tang political stage . Why did a large army of government use eunuchs to serve as commander in chief for a long time? What kind of consequence did such an eunuch’s army system make? How to appraise this system? Those who studied Tangshi probably raised these questions. In this paper, aiming at these problems, answer.