Regarding the application value of capecitabine metronome chemotherapy's regulatory effect on the immune microenvironment in nasopharyngeal carcinoma, many studies in recent years have confirmed that metronome chemotherapy and immunotherapy are safe and effective in resectable recurrent nasopharyngeal carcinoma. Therefore, the investigators plan to conduct a "single-arm clinical study on adjuvant therapy of toripalimab combined with capecitabine after Surgery for locally recurrent resectable nasopharyngeal carcinoma" to explore the efficacy and safety of toripalimab combined with capecitabine as adjuvant therapy after salvage surgery for resectable recurrent nasopharyngeal carcinoma. If this study is confirmed, it is expected to provide a new treatment model for patients with resectable recurrent nasopharyngeal carcinoma.