Based on differential game,this paper constructs the game model of traceable food manufacturers and traceable food processors and studies the optimal traceable information sharing strategy of traceable food manufacturers and traceable food processors,revenue and the total revenue of the entire food supply chain under three different decision-making conditions. Then simulation model is analyzed with the help of Matlab in this paper. The result shows that the total revenues of the entire food supply chain are the largest when making centralized decision. Making cost sharing can achieve a Pareto improvement for the traceable food manufacturers and the total revenue of the entire food supply chain. The influencing coefficient of brand image and traceable information sharing cost have the impact on both traceable food manufacturers and traceable food processors.