Abstract: "Time-Degree-Effect" is the method and standard for guiding online public opinion. In order to explore the relationship between the "time" and "degree" of online public opinion governance, and answer the question of how to combine "time" with "degree" to achieve the best "effect" of the governance. This paper constructs an evolutionary game model with "time" and "degree" as game players, analyzes the evolution path and the final evolutionary stability strategy of each player, and performs a stability analysis. Finally, a full-spectrum simulation of the "effect" of public opinion governance is conducted with the case of "a woman who gave birth to eight children in Feng County". The results show that there is a dynamic game relationship between "time" and "degree", and "time" and "degree" have different degrees of influence on the "effect" of online public opinion management, the magnitude of the influence is affected by the nature of the event and the benefits of the game. The research conclusions have reference significance for the decision-making departments to carry out the "Time-Degree-Effect" governance of online public opinion.

Key words: evolutionary game, online public opinion, Time-Degree-Effect, public opinion governance