Objectives: The aim of this study is to investigate the properties of the patients treated by fasting therapy. Methods: We measured PIBW, BMI, BFR and WHR of the patients and investigated the purpose of fasting therapy, the cause of weight increase, the times of weight increase, the duration of fasting therapy and the number of times of fasting therapy. Result: 1. The major age group was females in twenites. 2. The PIBW, BMI, BFR and WHR were highest in fifties. 3. In the purpose of fasting therapy, for beauty was the most. 4. In the cause of weight increase, diet disorder was the most. 5. The number of times of fasting therapy was the most in thirties. Conclusions: Above study shows that evaluation of obesity is important and more researches into fasting therapy were reguired.