Abstract: Evolutionary economics is developed on the basis of reflection and criticism of mainstream economics. It breaks through the paradigm of Newtonian mechanics of economics, making economics better inclusive of innovation, dynamics, and complexity. Through comparison and selection, this paper makes a systematic exposition of the theoretical system of evolutionary economics from three aspects:theoretical framework, methodology and main viewpoints. The theoretical system of evolutionary economics shows excessive fragmentation, which is very unfavorable to the integration of the discipline. Evolutionary economics needs to specifically strengthen the work of three aspects:first, strengthen the communication among different branches and disciplines. We need many integral teams which are able to reach a consensus on the basic concepts and problems of evolutionary economics. Second, strengthen the cooperation among different disciplines, especially philosophy. Third, pay more attention to the micro foundation of evolutionary economics.