Objectives: This paper aims to report the effects of Korean medical treatment on three patients who underwent thyroid lobectomy for thyroid cancer. Methods : Three patients were hospitalized at hospital to treat pain and general weakness after thyroid lobectomy. The patients took Korean medical treatment including herbal medicine and acupuncture. Numerical Rating Scale (NRS) of symptoms was measured every morning. Results : After the treatment, the pain and general weakness following surgery decreased, and general conditions improved. Conclusions: This cases show that Korean medical treatment is effective for a patients who underwent thyroid lobectomy for thyroid cancer.