Sinus surgery is the complete removal of sinus tissue during surgery to avoid recurrent sinus tracts caused by local tissue residue. The recovery time after surgery varies according to the size of the sinus tract excision and the severity of local infection. If the patient’s own repair ability is strong, the local infection of the sinus tract is lighter, and the scope of surgical excision is more superficial, the local incision change will be strengthened after surgery, and the sinus tract wound can be completely healed in about two weeks. Second, if the patient’s own healing ability is poor, the sinus tract is accompanied by purulent infection, the scope of surgical excision is larger, often need to fill the gauze after surgery, drainage of local fluid. In this case, the wound healing is slow, and it takes 3-4 weeks for the sinus tract tissue to grow slowly, and some patients even need longer time to fully recover.