Abstract: Objective To evaluate the radiosensitivity and toxicity of CMNa on local advanced nasopharyngeal carcinoma. Methods 40 patients with local advanced nasopharyngeal carcinoma were divided into two groups randomly: treatment group (n=20) and control group (n=20). The patients in treatment group were intravenous dripped CMNa 800mg/m 2 three times weekly during whole treatment period by nasopharyngeal carcinoma. Patients in control group were treated with radiotherapy alone. The method of radiotherapy in control...