The Theory and Evaluation Mode of Enterprise Informatization Jin Yong Assoc. Prof.,Dept.of Management, Hubei Polytechnic University, Wuhan 430068, China.The paper analysis how to evaluate EI, on the grounds of a three dimensioned evaluation model and its index system of informatization level, finance and competitive ability, it reflects the level of informatization, economic potential of constructing informatization and the degree of informationizing effectiveness on management.enterprise;\ informatization; evaluation mode of enterprise informatization