The Appellate Body of the World Trade Organization (WTO) is an important part of the dispute settlement mechanism of the WTO, which is very important for the handling of dispute cases and the normal operation of multilateral trade. However, due to the defects of WTO mechanism and the fact that the number of members of the Appellate Body is too small, the Appellate Body cannot operate at present. In order to solve the crisis as soon as possible, the EU, the United States, China and other important subjects of international economic law have put forward various solutions individually or jointly. But so far, there is no consensus plan for the reform of the Appellate Body. On the basis of integrating different national programs, this paper proposes another reform plan for the appellate body, which includes increasing the number of members of the appellate body, setting up a transition period and establishing a special enforcement and supervision body. Meanwhile, it is proposed to establish a new dispute settlement mechanism integrating "litigation arbitration and mediation enforcement" in order to replace the original mechanism and better promote the stable and long-term development of world economy and trade.