Today, informationization has become the necessary choice to help enterprises to increase the core competence and adapt the competition of the market. However, a few of them succeed. From Information Resource Management(IRM) to Information Resource Planning(IRP), the article analyzes some researches about the reasons for the failure of informationization. An important reason for this failure is the lack of information resource planning. IRP needs a systematic and scientific plan, and the accomplishment of IRP is help of the perfection of informationization. The analysis about an actual example gives expression to the important influence of IRP more concretely and points to the imperative need of carrying out IRP in enterprises.
Keywords: Informationization, Information Resources Management, Information Resources Planning, Analysis of Requirement, System Modeling.