Professor Zhao Jiaxiang believes that there are many bases of the theory of "five types of social formation" in the works of Marx and Engels,but none of the bases given by him are tenable in fact,thus can not show that the theory was put forward by Marx and Engels themselves.

In order to further prove that Marx never put forward the theory of "five types of social formation",but merely the theory of "three great social formations",this paper also offers two brief arguments in terms of the purpose and method of Marx studying social formation.

On the spanning of “Capitalist Caudium” by undeveloped countries——Correct understanding of Marxist Law of evolution of five kinds of social formations;

A Look on the Five Social Patterns in the light of Marxist Exposition on Asian Society;

Its social formation theory focuses on adherance to overall development;its principle of connection and development calls for coordinate and sustainable development;and the thought of seeking overall-development of human beings emphasizes human-centered development.

Modern sci-tech revolution begins its challenge to the Marxist theory of social formation.

Marxist theory of social formation is an open system,which is consciously used and creatively developed by CPC,during the great practice of building Socialism with Chinese characteristics.