With development of computer science and network, computer and software are getting more and more applications in scientific research, production and service areas. In silico is an expression used to mean “performed on computer or via computer simulation”. Chemoinformatics is one of in silico technologies employed in researches relating to Chemistry. It is an application of informatics methods to solve chemical problems concerned with molecular design, synthesis design and structural identification. It is an interdisciplinary combining of Computer science, Mathematics and Chemistry. In principle, three methods are included in Chemoinformatics: data-based, logic-based and principle-based. These years, Chemoinformatis has been applied not onl...