Xiaozhong Shengji Oral Liquid

(1) To evaluate the effectiveness and safety of Meifan Fuxin solution in the treatment of radiation-induced oral mucositis in patients with head and neck malignancies; (2) To explore the optimal dose of Meifan Fuxin solution for radiation-induced oral mucositis and provide a basis for dose selection in phase III clinical trials; (3) To explore the TCM syndrome differentiation of the beneficiary population.