To meet the challenge, internet sociology needs not only to establish itself as an independent science, but also to have its themes and subjects, which include the social structure and social conduct of the internet space, the social problems it causes, and the interaction between the virtuous world on the internet and the reality world.

At present,China is in rapid development of internet culture,thus the reflection on the dilemma of the network world and the discussion on ethical principles of network world are of great practical significan.

Harmony between Science and Humanity:Basing on practical philosophy s return to the life world;

Returning to life world:the outcry of comtemporary moral education;

Transformation of curriculum theory based on a regression to life-world;

An Analysis of Life-world and Everyday-life-world;

Habermas theory of lifeworld is the core of his whole critical theory,however,his understanding to lifeworld in his early time is different from that in his later.

Habermas particularly understands the crisis of modernity with amazing insight and argus that the crux of the problem lies in the colonization of lifeworld and loss of freedom arising therefrom.

And based on discussing the problem of the later Capitalist society through dual-framework of "lifeworld-system",it elaborates the inevitability that he constructs his communicative rationality by the interaction between language and lifeworld.

World of education and world of life revisited;

The trend of materialism and weakness of humanity among college students are to draw our attention to their world of life.

There are two views about the world of life in the general philosophical aspect, experiential daily life and nonobjective ideal life,which leads to two deviations in the course of teaching returning to the world of life.