This study was designed to evaluate the relationship with abdominal visceral fat area in obese patients identified as phlegm type. Methods : This research were performed in 201 cases, visited Kirin Oriental Hospital from March 2005 to February 2006 for weight loss. We measured body mass index(BMI), abdominal CT, and classified all patients into two groups, normal and obesity group. And then we differentiated patients with phlegm-retention symptom from patients without it through questionnaire made by Korea Institute of Oriental Medicine. Results and Conclusions : Phlegm type was significantly higher than them of no symptom of phlegm in the abdominal visceral areas(P=0.036) and ratio(P=0.007), in obesity group(BMI≥25). On the other hand, there is little difference between abdominal visceral fat areas of phlegm type and no symptom of phlegm in normal group. According to the above results, if obese patients are diagnosed as identification of phlegm type there is good chance of abdominal visceral obesity.