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In view of the difficult problems in the complex factors of urban comprehensive disaster risk assessment and the inconsistency of the single method evaluation results, the evaluation index system of urban comprehensive disaster risk is constructed based on the criteria of disaster risk, social economic vulnerability and fortification level. The idea of combination evaluation is instructed using the four combinations of Mean method, Borda method, Compeland method and Fuzzy Borda method to evaluate the different results of the three evaluation methods: Fuzzy number stochastic simulation method (FSS), weighted summation method (WSM) and set pair analysis method (SPA). The Spearman rank correlation coefficient is used as the test standard and repeated iteration, then a comprehensive risk assessment model of urban comprehensive disaster based on cyclic revision mode is established and the comprehensive disaster risk level ranking and grade division of 31 cities, municipalities and autonomous regions in China were given. It provides a theoretical and practical basis for the indepth identification of urban comprehensive disaster risk levels. © 2019, World Research Association. All rights reserved.
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