Expanded body rhinoplasty is currently more popular a plastic surgery technology, the use of polytetrafluoroethylene material, biocompatibility is better, higher safety, possible surgical risks include the following: 1, swelling and bruising: swelling and bruising will occur in the nose after the operation, if subperiosteal separation is carried out, obvious bruising around the eyes can also be seen, usually around 2 weeks will basically subside; 2, postoperative infection: the poor ability of the expanded body to resist infection Because the expanded body is a kind of porous material, long-term exposure to the air will also carry bacteria, these bacteria will lead to the occurrence of near-term or long-term infection, such as early redness, swelling, heat, pain, etc.; 3, prosthesis rejection: manifested in the postoperative swelling does not subside, the incision is not healed, there is a yellow liquid outflow, skin redness, most often seen in hypersensitive body or poor compatibility of the prosthesis.