The course of introduction, use and development of SCI in China is reviewed, the "overhot phenomena" of SCI using in performance evaluation of scientific achievements in domestic universities are analyzed.

The researchers can rapidly get familiar with the application fields of Membrane bioreactor(MBR)technology,and follow the development directions and trends of MBR by analyzing the articles about MBR recorded in SCI database,so their research work is prevented from repeating the foregoing research and thus keeps novelty.

Through the statistical analysis of publication time, source, author, address, subject and citation of Science Citation Index (SCI)-embodied literatures, the developing actuality of food science and technology in China was discussed.

Method Hepatology and gastroenterol-ogy journals in the Science Citation Index were searched and their impact factors were analyzed.

Taking the Science Citation Index for example,this paper reviews the inclusion and appraisable function of authoritative search tools in the world.

CSSCI:Significance, Characteristics and Amelioration;

Based on CSSCI,it studies the periodical "R&D Management" on its regional distribution,institution distribution,core authors,etc.

Based on the discipline structure and area distribution of 2003 CSSCI we find in the total of 2003 social sciences theses the first 9 disciplines,of which the first is economics,and the first 7 areas,of which the first is Beijing.