In cancer patients showing nausea and vomiting, a number of factors can be considered as the cause including brain tumor, electrolyte imbalance, gastrointestinal diseases or types of chemotherapy agents and dose of the drugs. Though nausea and vomiting can be minimized through the use of various anti-emetic drugs, many people still suffer from severe nausea and vomiting with poor quality of life compared with patients who do not show significant nausea and vomiting. In this report, we introduce a case of a cancer patient who suffered from severe nausea and vomiting. The patient was female and 59 years old with NSCLC (non small cell lung cancer) with metastatic brain tumor. Though western conventional medical treatment was used to reduce the symptoms, persistent nausea and vomiting were noted during the admission period. Herbal decoction Gamibokryungbanha-tang was used for nausea and vomiting which were uncontrolled under conventional western medicine; the patient showed remarkable improvement in terms of frequency and severity of nausea and vomiting. Further study will be needed in order to determine the long-term effectiveness of oriental medical treatment on cancer patient with nausea and vomiting.