本文通过对文献资料和民族调查材料的综合研究认为:傣族和蒲人都是在德宏地区居住较久的土著民族,在历史上曾有过交错杂居,来往密切,生产力发展水平相近的时期。元代以后,由于政治局势变化,引起当地的民族关系发生重大变动:傣族成为德宏地区的统治民族,而蒲人却逐渐衰落,并由坝区向山区迁徙。 Based on a comprehensive study of the literature and ethnic survey materials, Dai and Po people are all indigenous peoples who have lived in Dehong for a long period of time. Historically, there have been periods of stagnation, close contacts and similar levels of productivity development. After the Yuan Dynasty, due to the change of the political situation, the ethnic relations in the area have undergone major changes: the Dai became the dominant ethnic group in Dehong Prefecture, while the Pau people gradually declined and migrated from the dam area to the mountainous areas.