Abstract: Integrated Pest Management involves the complicated ecosystems,Computer has become the effective decision-making tools used in manipulating such ecosystems.Statistic analysis,constructions of models and simulation of ecological processes are the preliminary applications of computer-aided decision-making in IPM.In recent years,DBMS (Database Management System),DSS (Decision Support System) and EXS (Expert System) of IPM have been developed on the basis of the above work.This implies that the period of scientific decision in IPM comes.In some senes,the progresses in the techniques of computer hardwares and softwares have changed the past of IPM,are influencing the present of IPM and will make the future of IPM.