对下唇超过2/3以上的大型全层缺损作出满意的修复是比较困难的。我们认为满意的下唇修复应具备以下几个方面:1.恢复下唇的各种组织结构,即具有皮肤、肌肉、粘膜。2.恢复下唇的外形,即具有微向前突而下翻的红唇、白唇、唇红缘。3.恢复下唇的功能,即与上唇协同能闭合掩盖口,齿;无涎液外溢;不限制张口度; Satisfactory repair of large full-thickness defects with more than 2/3 of the lower lip is difficult. We believe that the satisfaction of the lower lip repair should have the following aspects: 1. Restore the lower lip of the various organizational structure, that is, with skin, muscle, mucous membrane. 2. Restore the shape of the lower lip, that is, with slightly to the forward and down the red lips, white lips, lip red edge. 3. Restore the function of the lower lip, that is, in coordination with the upper lip to cover up the mouth, teeth; no saliva overflow; does not limit the mouth opening;