作为重要的经济体和人口大国，随着综合国力的增强和开放程度的提高，中国在世界人口迁移网络中的位置日趋重要，也使得中国在可预见的未来，势必要面临跨国界的人口迁移压力。现阶段中国应考虑如何减少高素质劳动力的流失，充分利用外来劳动资源，以弥补国内劳动人口红利下降所带来的问题。合理的人口政策应该更多的从迁移缘由出发，才能实现对人口流动的有效引导和充分利用。本项目从分析“迁移缘由”着手，运用复杂网络的理论构建世界人口迁移网络模型，该模型从微观个体的理性和选择性出发，能够体现人口双向流动的非对称性，还能体现多边关系的相互影响，与以往研究相比，保留了更全面的信息，能更科学的解读人口迁移的原因、模式，并做预测和政策仿真。此外，我们还将经济、环境、政策等要素，作为迁移障碍纳入网络模型，和实证数据结合，重点分析在开放环境下，世界人口迁移模式变迁对中国的影响，并提出有效的应对和政策建议。

As a major economy and populous country, China’s role in global migration network is becoming more important, under the background of development and opening. In the foreseeable future, China will face with the pressure of cross-border population migration. So we should consider how to reduce the loss of high skilled workforce, make full use of immigration resources, in order to overcome the decline of domestic population dividend. The effective population policy should start from analyzing the reason of migration. Along this way, the project builds the global migration network based on the theories and methods of complex networks. The network stems from the individual rationality and selectivity, shows the asymmetry of bidirectional flows, and describes the mutual effects of multi-lateral relations. So it retains more information, brings more scientific interpretation of migration reasons and supports the forecast and policy simulation, compared with the previous researches. In addition, the project also brings the economic, environmental and policy factors into the network as migration barriers. Based on the empirical data we focus on analyzing the impact of global migration barrier’s change on the opening China, and try to give effective response and policy recommendations.