[Purpose/significance] Network public opinion events often stimulate public sentiment, and network sentiment will also affect the behavior decision-making of public opinion subjects, and the behavior decision-making of public opinion subjects will guide the trend of public opinion to a certain extent. Therefore, it is of great value to study the interaction mechanism between emotion and behavior of public opinion subjects. [Method/process] On the prem? ise of individual bounded rationality, this study discusses the interactive relationship between emotion and behavior through the emotional benefits brought by the competition for discourse power among public opinion subjects. Using emotional value function and probability characteristic function, this paper constructs a behavior characteristic func? tion to measure the emotional value of public opinion subjects. Through the emotion measurement of behavior characteristic function, an improved ultimatum emotion game model about Internet users and media marketing numbers is con? structed. The behavior decision-making mechanism of public opinion events considering emotional factors is studied, and the balance of game strategy and the threshold of discourse power are discussed. Taking "Guangzhou teachers sus? pected of corporal punishment of students" as an example, this paper verifies the rationality of the emotional game model. [Result/conclusion] According to different motivational demands and different behavior groups in the process of emo? tional game, this paper gives the coping strategies of public opinion events, and carries out operable and effective pro? cess intervention.