Based on the characteristics of big data of network public opinion,this paper analyzes the modes of emergency negative emotion guidance and "Time-Degree-Effect" standard under the environment of public opinion big data, and proposes the view of"Time-Degree-Effect"integration. Through constructing negative emotion guidance model, model analysis and numerical simulation, this paper carries out integrated modeling and simulation of"Time-Degree-Effect". In view of two scenarios for major emergencies and general emergencies, the corresponding"Time-Degree-Effect"strategies are put forward.