From their sources,properties,harmfulness and poinsoning mechanisms,several harmful interior decoration materials——formaldehyde,benzene,ammonia and radioactive radon are discussed in this essay,and at the some time,the author raises some specific measures for creating the Green Surrourdings.

The structure and representative synthesis method of polyimides are discussed .The characteristics and applications of polyimide materials are also described.

With the development of the reform of educational democratization,the original evaluating methods for chemical experiment do not fit the need of the present educational democracy. In this article, a new evaluating norm system for chemical experiment is put forward which includes student self-evaluation and teacher evaluation, in the teacher evaluation, more opportulities are offered to students who are free to choose text A or text B .The whole evaluating system reflects the ideas of educational democracy and all for student's development.