Objective To discuss the quantitative risk evaluation indicators and model for catering food safety during territorial large scale activities;in order to find out the key areas for catering food safety health security and provide scientific bases for the selection of reception units in advance.Methods Delphi expert consultation method was used to establish indicator systems for the risk evaluation of catering food safety during the territorial large scale activities;and the weights of indicators were determined.Furthermore,a comprehensive index method was used to establish the linear risk evaluation model.Results The average working years of thirty experts was 20.63±5.80;the response rates of the two-round consultation from the experts were both 100%;and the average coefficient of authorities were 0.86±0.06 and 0.89±0.06.Kendall’s coefficients were 0.747(χ2=645.518,P<0.01)and 0.858(χ2=802.321,P<0.01),and opinions among experts were consistent.Five first-class indicators and twenty-two second-class indicators for risk evaluating catering food safety,which could seriously influence the territorial large scale activities,were identified.The weights of hygienic credit,hygienic management,architectural hygiene,hardware installations average weight,and hygiene during purchasing,processing,storing and transportation were 0.93,1.54,1.43,2.06 and 4.04,respectively.Moreover,the linear risk evaluation model was established.Conclusion The establishment of the quantitative risk evaluation model for catering food safety during the territorial large scale activities provided scientific evidence and technical support for securing public health in territorial large scale activities,and the model was worthy of wide spread.