Function theory is a kind of design idea and methods that take into the solution to the problem by analyzing and synthesizing the product function, abstracting and embodying the construction system and the transformation and combination of shape units.

Since sociology generated in the middle period of the 19th century,sociologists of order theory,function theory,conflict theory and interdynamic theory have produced the strong interest and carried on a lot of helpful exploration to the theme of "harmonious society".

The functional theory and the conflict theory of contemporary West sociology are the most influential,which regard the social harmony and the social conflict as the common social phenomena with their own emphases.

The relationship is in harmony or conflict from the view of functional theory,symbolic interactional theory and conflict theory.

From the perspective of functionalism, the interaction between multilateral legal cultures is the contrast and competition in functions between them, which rule is that the superior wins, and the inferior eliminates.

Based on the discussion of the functional theory of sociology and anthropology and their development,this article puts forward the conditional-functional analysis hypothesis about the social systematic analysis.

Functionalism scholars consider positive function as the cause of witchcraft’s existing.

Then the author examines the kinship and differences of translation and interpretation in order to see what the tools and concepts of functionalism may help with analysis of interpretation.