Design theory and method of life cycle assessment system for chemical products

On the basis of analyzing the current problems of life cycle assessment(LCA),the designing purposes and requirements of LCA system for chemical products are presented,and the analysis of the construction of LCA system according to the LCA steps made by ISO is made.With the functional parts of LCA system,and the contents and theory foundation analyzed,the actualizing methods for the functional part on VB platform and the problems be paid more attentions are put forward.