This study integrated individual study results that verified the effectiveness of reduced body fat after body·obesity care, conducted meta analysis and reinterpreted the result. The study conclusions are as below. First, the total number of participants in this study was 645, and each study included a minimum of 6 and a maximum of 57 participants. The Cohen's d value of each individual study is shown to be between +7.2 and -3.618, depending on the study, and it can be seen that the effect was not necessarily positive. Second, the entire effectiveness on body fat after meta analysis was 60%(0.60), which was between minimum 49%(0.49) to maximum 70%(0.70), larger than .20 and smaller than .80 in 95% conference interval, which was about intermediate effect. Third, funnel plot is a graph indicating the positive and negative effectiveness and scale size of different results/ As the individual studies are in visual bilateral symmetry, and as small-scale studies lack compared to large-scale studies, and there was no negative effectiveness among small studies. The purpose of this study is to compare the results of previous studies on body fat reduction after body shape and obesity management, which have been studied for the past 15 years, and to use the data to carry out follow-up studies in the future.