Abstract: According to the provisions of Trust Law, trustee manages or disposes of property rights in his own name, so the safety of the trust property and the interests of beneficiary are closely related to the behavior of the trustee. However, due to the lack of legislation and regulations, the problem about trustee responsibility undertaking makes it difficult to defuse the risk in passive trust. The trustee responsibilities in passive trust are shared among different parties, which lead to the diversity of the trustees under the same trust. Hence, the trustees shall bear corresponding responsibilities in accordance with their duties and benefits under the trust. Moreover, to clarify the undertaking of trustee responsibilities in passive trust, it is necessary to define and deal with the relationship of the trustee under the contract and other related parties correctly.