In the non-rigid cashing financial products of commercial banks, the legal relationship between banks and customers is in essence a trust relationship rather than a principal-agent relationship. Its legal characteristics are in line with the characteristics of trust legal relationship no matter from the perspective of entrustment, au? thorization or property independence. Therefore, we should confirm its trust attributes and apply the trust law uniformly, so as to solve the problem of“separate operation and separate supervision”, which often leads to the confusion of the specific application rules. So trust attributes can further promote the development and improve? ment of the relevant system of trust trustee’s obligation and responsibility.