Abstract: Expert systems are computer programs that could simulate specialist to deal with domains of narrow specialization. Every expert system mainly consists of the knowledge base, the global data base, inference engine, the explanation and interface. At present, the application styles of domestic expert systems on pomology are the pomiculture production management expert systems and the fruit tree nutrition diagnosis expert systems, the plant diseases and insect pests diagnosis expert systems. There are some computer technologies on the pomological expert systems such as artificial neural network, fuzzy neural network, multimedia technology, Web technology. The most pomological expert systems were developped on the agricutural expert systems platform, while a few systems were directly developed by the programming languages without platform. As the information techonology development, the dynamic and more intelligent pomological expert systems will be developped by using of advanced computer technology and the pomology characteristics.