唐代宗室前后地位的升沉变化来自于中央政府的宗室政策,本文着眼于考查唐代前期的宗室政策。从唐高祖到唐玄宗之间,中央政府对宗室所采取的多种措施加以管理,一方面是衣食租税的优厚的眷顾,另一方面却是严密的防范,这条主线贯穿于唐代前期。唐玄宗时的防范措施达到了极致,这为后来宗室的没落埋下了伏笔。 The ups and downs of the status of the imperial clan in the Tang Dynasty came from the imperial clan policies of the Central Government. This paper aims to examine the imperial clan policies of the early Tang Dynasty. Between the Tang emperor and the Emperor Xuanzong, the central government has taken various measures against the imperial clan. On the one hand, it is favored by the tax on food and clothing and on the other hand it is closely guarded. This principle runs through the early Tang Dynasty. Tang Xuanzong precautionary measures reached the extreme, which later laid the groundless foregone conclusion.