Two layer regular polygon central configurations of 2N-body problems are studied.

Central Configuration and Periodic Solution of N-body Problem;

In this paper,we discuss category about planar central configuration of four-body problems by using algebra method,and draw some new conclusions:for the positive mass points,the central configuration of parallelogram must be rhombus or square;for the arbitrary none-zero mass points,parallelogram is the central configuration if it satisfies θ∈(0.

The classification of planar 5 - body central configurations is discussed , in which three class planar 5 -body central configurations are obtained.

By comparison with subject structure center courses, we can undoubtedly gain more rational knowledge about present teaching, which will help the improvement of the teaching quality and academic level of de.

It proposes that the central structure and the open-closed motion unit should be the technology alteration emphasis, and puts forward the optimized design Scheme, which obtains the effect test through the comprehensive analysis and comparison.