Group buying mode has been one of the hottest business models in the Chinese Internet area in recent years. Though the market competition is intense, the demand of group purchase is still on the rise. Nowadays, the research on comprehensive evaluation of group buying websites in our country is still tiny. The paper used DEA combined with fuzzy comprehensive evaluation to evaluate popular group buying websites. According to the characteristics of group buying websites, we evaluate the quality of group buying websites from three aspects. There are running efficiency, profit ability and promotion quality. Then we got the comprehensive evaluation results of each website. Some suggestions of website building for group purchasing enterprises are proposed.