According the perspective of the sociology of knowledge, there existed relativity between knowledge discourse and its social condition, this perspective included sociology. The Western-Europe capitalist society appeared great change of economy、politicalization、culture、productive pattern and social life during l9(superscript th) into 20(superscript th) century, there were some sociologists enabled different perspective and research method for their society. Now, these famous sociologists are Karl Marx Max Weber’ Emile Durkheim and Georg Simmel, although they faced the same social situation, there existed different perspective and research method among them despite similar perspective. This paper is going to compare and analyze these similar and different perspective, in order to make a generally integration for classical sociologists’ theories connotation.