Aiming at the data security problem of Internet platform, this paper discusses the construction of feasible multi-party governance path based on data trust. An evolutionary game model is established to analyze the behavior strategy and stable state of the platform and trust, and MATLAB simulation is used to explore the influence of parameter value changes on the stable state of the game. It is found that factors such as trust investment income, trust investment sharing ratio and income transfer ratio can promote the platform to invest in safety, while project spillover effect has negative incentive effect. The government can promote the convergence of evolutionary game to a benign state through policy tools.