现实生活中对于委托合同的双方当事人任意解除权的争议越来越多,也出现了许多设定不可单方撤销的约定条款。对于该条款的效力认定问题,本文从委托合同的定义及特征,任意解除权的含义以及现实生活中的争议层层递进对不可单方撤销的委托合同的效力进行认定,并提出意见。 In real life, there are more and more controversies over the right of arbitration arbitrarily for both parties entrusting the contract, and there are also many agreed clauses that can not be unilaterally set aside. For the validity of the provision of the clause, this article from the definition and characteristics of the commission contract, the meaning of the right to arbitrariness and real-life controversial layers of progressive non-tripartite revocation of the effectiveness of the commissioned contract to identify and make comments.