Abstract: In order to ensure the disaster emergency handling capacity for grass-roots people, the index system of influencing factors of emergency security capacity in disaster was constructed from the five aspects: disaster emergency response ability, disaster prevention ability, disaster emergency rescue ability, resource security ability and post disaster experience summary ability. Amos 24.0 and SPSS 24.0 software were used to construct emergency security capacity in disaster SEM model. Combined with the questionnaire, this paper analyzes the influence degree and reasons of each influencing factor on the emergency security capability of the grassroots. The results show that grassroots emergency security capacity in disaster is mainly affected by the disaster emergency rescue ability and post disaster experience summary ability，it can strengthen the management ability of coordinating the masses to deal with the accident within the grass-roots masses and the government departments, and make the masses deepen their reflection on the accident; There are people do not understand the emergency plan and emergency rules and regulations cognition is insufficient, it is necessary to ensure that all units formulate accident prevention policies and emergency plans, and implement them to every person so as to enhance the overall disaster emergency support capacity.

Key words: structural equation model, emergency security capability, questionnaire survey, emergency rescue, post disaster experience summary