研究唐代中原与西域的关系,民族与文化是至关重要的眼目。太宗贞观四年(630)以来,唐廷开始与北方游牧民族打交道,行军之同时,逐步在边疆经营镇防体制。高宗显庆三年(658)以后,唐朝在西域绿洲地区建立军镇体制之同时,也根据各个地区的实际情况,在承认当地民族首领或国王世袭、自治的基础上建立羁縻制度。长寿元年(692),则天武后再设四镇,发汉兵三万人镇守,在完成镇戍体制之同时,也完善了羁縻体制。对于羁縻体制的 Studying the relationship between the Central Plains and the Western Regions in the Tang Dynasty, ethnicity and culture are the most important eyes. Since the four years of Taizong-Zhenguan (630), Tang Ting began to deal with the northern nomadic herdsmen and at the same time marched gradually to run the system of town-defense at the border. After the founding of the Qing Emperor Gaoqing three years (658), the Tang Dynasty established the system of military and town in the oasis area of ​​the Western Regions and also established the system of jiading on the basis of recognizing the hereditary and autonomy of the local national leaders or kings based on the actual conditions in various regions. In the first year of longevity (692), there were four towns in Tianwu County and thirty thousand Han troops were guarded. After the system of town garrison was completed, the system of jiran was also improved. For the Jimi system