Abstract: To emphasize the advantage in constructing the traceability system in FSDN, this paper constructed the Nash game equilibrium model in food supply chain and the Pareto game equilibrium model in FSDN, and analyzed the input level of constructing traceability system of enterprises in the two models. The results showed that enterprises in food supply chain would invest at a low level in food safety under the mandatory constraint of policy and regulation. In the Pareto equilibrium model, enterprises in FSDN would input at a higher level in food safety construction than in the Nash equilibrium level. Therefore FSDN would make enterprises improve the input level of constructing the traceability system, and promote the enterprises’ active participating in the construction and implementation of traceability system.