Abstract:This study aims to construct an index system of national cohesion which consists of five supporting factors, including material, spirit, culture, politics, and security. The evaluation method to assess the national cohesion based on a three-stage approach for weight determination is developed, and a quantitative analysis on 45 global sample countries is conducted. A comprehensive comparative analysis of the national cohesion is conducted on five permanent members of the United Nations and BRICS countries. Empirical results show that China's national cohesion ranks 14^th, which locates in the behind of the top tier of 15 countries among the 45 sample ones. For China, the spiritual cohesion is the factor with advantages, whereas the political cohesion is the disadvantageous factor.