This paper first summarizes and classifies the comprehensive evaluation (CE) methods in different fields , and analyses the principles , virtues , shortages and their application fields of each method. It explores the newly re2 search development of CE methods. There are three major problems in existing methods : The first is the non-consis2 tency about the evaluation conclusion when using different CE methods ; the second is the lacking of special treat2 ment in practice ; the third is the disjoint between theory researches and practical applications. Based on this , the paper puts forward the new idea that the combined evaluation based on methods integration is to set up an I3DSS that supports the consistent evaluations