Over 80% of head and neck cancer patients had side effect of radiation-induced oral mucositis, leading to xerostomia, abnormal taste, dysphagia, poor intake and body weight loss under radiotherapy. No defined and effective golden treatment has been confirmed so far. Since these symptoms are classified into “fire/heat evil that damages yin” in Traditional Chinese Medicine (TCM), this research adopts the approach of “nourishing yin and clearing heat evil” by Zeng Ye Decoction mouthwashes with acupuncture to relieve the symptoms. The patients (aged 20-75) included in this research were diagnosed with head and neck cancer, taking the first-time radiotherapy with/without chemotherapy from Dec 2015 to Mar 2017. The Chinese medical group was additionally offered Zeng Ye Decoction mouthwashes four times per day and acupuncture three times a week. Body weight, PROMS (Patient-Reported Oral Mucositis Symptom Scale) and NCI-CTCAE (Common Terminology Criteria for Adverse Events, version 4.0) were collected before and after treatment for assessment. 58 patients with head and neck cancer are included in the research. No statistical difference of the baseline characteristics between TCM group (n=26) and the control group (n=32) was uncovered. Body weight loss improvement in TCM group has statistical significance (p=0.044) compared to the control group. Meanwhile, the severity of PROMS and NCI-CTCAE scores of the TCM group is milder than the control group. In conclusion, the combined therapies of Zeng Ye Decoction mouthwashes and acupuncture can effectively improve body weight loss for the patients with head and neck cancer, while they are taking radiotherapy with/without chemotherapy.