It is well known that functional dyspepsia is one of the most common diseases. Functional dyspepsia, as defined by Rome I and II criteria, is a known and important gastrointestinal disorder. Symptoms of functional dyspepsia are postprandial fullness, postprandial discomfort, epigastric bloating, epigastric lump sensation, early satiety, nausea, vomiting, regurgitation, eruction, hunger pain, postprandial epigastric pain, heartburn, soreness and anorexia. Treatment of these symptoms are recorded in the Donguibogam(東醫寶鑑). This study is a comparative study between initial medical examination and end of medical treatment with LJTG mentioned in the Donguibogam. After treatment with LJTG, patients showed improvement in all symptoms associated with functional dyspepsia, including general condition. The results of this study suggest that LJTG is an effective treatment for functional dyspepsia.