Trademarks are used to distinguish the source of goods and avoid misunderstanding among the relevant public. The act of cutting off the trademark destroys the function of distinguishing the source of goods. If the merchant accepts the return, it will be difficult to sell normally. In order to protect the rights and interests of all parties and ensure the stability of market transactions, in this case, the return of goods can not be supported by law. Of course, both parties can voluntarily reach a return agreement, which does not conflict with the law.