Abstract: The research of effect evaluation for non-experimental data is an important research field in management science. Although the effect evaluation theory has been researched for decades abroad,there is little research domestic. Based on such situation,this paper lays out effect evaluation theory and empirical analysis methods,and considers three main methods involved:Heckman Correction Method,Difference-in-Difference Method and Matching Method. At last,we review some noticeable aspects in practice.

Key words: effect evaluation, heckman selection method, difference-in-differences method, matching method