S&T evaluation has been used in the management of S&T projects for several years, but there is a great conflict between the theoritical research and practical operation. Many evaluation methods and model has been devised since 1960s, but in evaluation operation field, traditional qualitative methods are still uesed, there are some shortcomes in the data intergration and analysis method too. The purpose of this artile is to study the evaluation theory and methods based on the former study from th...