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  There exist many problems in the Environmental Evaluation(EE) field of present China,in order to cope with the above-mentioned problems,the crucial Package Solutions are to realize Environmental Evaluation Informatization by introducing information technology to the Environmental Evaluation field.Analyzed from the viewpoint of system engineering theory,EE has two essential characteristics:Firstly,it belongs to the discrete event dynamic system(DEDS); Secondly,it is a kind of evaluation and prediction to the mutual influence produced by the activities of human being and environment(natural environment,social environment).So,according to the essential characteristics of EE,the large-scale and distributed complexly intelligent simulation and control system,also called the Environmental Evaluation Informatization System(EEIS),will be constructed in order to realize the Environmental Evaluation Informatization.The EEIS,centering on system engineering and intelligent simulation theories mainly,which synthetically applies a great deal of theories of military command automation system,will effectively solve various problems exist in EE field and provide valuable reference for realizing the Informatization of the environmental science subject.……