Medial medullary infarction is caused by occlusion of vertebral artery or lower basilar artery. In this report, one case had impaired pain and thermal sense over half the body, and complained of dizziness, nausea and vomiting. The other symptoms were slippery pulse(脈滑), pale tongue with whitish coating(舌淡苔白), white face(面白), obesity(體肥) and unchanged skin color(肌色如故). We diagnosed this patient as the Gastrointestinal Phlegm(食痰) and prescribed Jengjengamiyijin-tang (Zhengchuanjiaweierchen-tang). The symptoms of impaired pain and thermal sense, dizziness, nausea, and vomiting were improved. So, we suggest that Jengjengamiyijin-tang (Zhengchuanjiaweierchen-tang) could be effective to the patient with the symptom of the Gastrointestinal Phlegm(食痰)