Recently, the utilization of big data for disposing the economic transactions has widely developed and achieve enormous benefits for all users. However, existing economic platforms are more concentrated on the effectiveness response and transaction amount, which ignores the legal and regulation issue in the utilization of big data techniques. Specifically, the model may leak users privacy information or dispose several illegal services for users. Therefore, we involve the concept of legal supervision mechanism by setting certain items, which can assist the platform to rid the illegal issues. In this paper, we propose a novel legal supervision model by utilizing the big data analysis tools, which can prevent privacy information leakage and ensure almost transaction is complying the presupposition legals. From our extensive investigation results and analysis, we can conclude that our proposed analysis model by utilizing big data technique can successful prevent the illegal events with reasonable computation cost.