渤海国人口数量是衡量渤海国社会经济发展状况的重要参数之一,而人口本身的特性则是判断渤海民族兴衰的晴雨表。渤海国初期的人口构成元素多样,流动性较大,其后随着渤海国发展、繁荣和衰退经历了一个逐渐增加、迅速膨胀和全面流失的过程。而梳理渤海国人口的变迁过程可以从新的角度阐释渤海国民族所固有的特征。 The population of the Bohai Sea is one of the most important parameters to measure the economic development of Bohai Sea. The characteristics of the population itself are the barometer of the rise and fall of the Bohai Sea. In the early Bohai State, the population was composed of diverse elements and large liquidity. Subsequently, with the development, prosperity and recession of Bohai State, it experienced a process of gradual increase, rapid expansion and total loss. Combing the changing process of the Bohai Sea population can explain the inherent characteristics of the Bohai nation from a new perspective.