人口迁移算法模拟的是社会领域中人口随经济重心而转移、随人口压力增加而扩散的机制，即模拟的是人往高处走、人往富处流，当某个优惠地区的相对人口过剩，人口压力增加时，人们就会迁出该优惠地区去寻找更好更适合自己的优惠地区的这样一种规律。前者促使算法选择较好的区域搜索，后者可在一定程度上避免陷入局部最优点，搜索过程呈现交替进行集中搜索和分散搜索的特点。这体现了人口迁移过程中人口不断聚集和扩散的矛盾运动的特点。后来由我国学者徐宗本给出了人口迁移算法改进的形式。-Population migration algorithm simulates a social field of population with the economic center of gravity shift, and the diffusion mechanism with the population pressure increases, that simulation is downwards, with the flow of people to the rich, when the relative overpopulation of a preferential area when population pressure increases, people will move out of the area to find better deals more suited to their preferential areas such a law. The former is a better choice to promote regional search algorithm, which can avoid local optima to some extent, the search process is presented alternately centralized search and scatter search features. This reflects the demographic characteristics of the population continued to gather during the migration and proliferation of contradictory movement. Later, by Chinese scholars Xuzong this improved algorithm is given in the form of population migration.