Purpose：Chronic cough is one of the symptoms that lead to a reduction in the quality of life insomnia, such as the decline in physical strength. For chronic cough due to metastatic lung tumors, and we experienced an example of after use pregabalin, showed a reduction of symptoms. Case：This case is a 75-year-old man. Abdominoperineal rectal amputation was performed in rectal cancer. Adjuvant chemotherapy has been performed, but multiple lung metastases appeared one year after surgery. Chemotherapy was continued, but lung metastases progressed, it became the policy of anti-cancer treatment ended 4 months after 2 years after surgery. Cough worsened since then, it was referred introduced to palliative care department. Because we thought respiratory tract irritation increased by organic disease is the cause, it starts from 50 mg／day pregabalin, it was increased by 25～50 mg while aware of potential side effects, such as drowsiness during the day. Cough relief at 125 mg／day, night sleep wasalso secure and possible. Conclusion：Pregabalin which is effective in neuropathic pain, there is a possibility that the suppression of hyperexcitability of nerve cells that are its pharmacological action, is also effective in chronic cough, it becomes choice of antitussive different mechanisms of action and opioid there is a possibility that may.