Accountant the informationization already obtained the widespread application in the enterprise, the accountancy has also had the very big change, the electronic accounting machine substitution has kept accounts, to change the accounting data processing method manually, has the profound influence to the accounting theory and the practice. This article take accountant the informationization the influence which and the existence limitation the internal control brings for the enterprise as the object of study, after elaborating the enterprise implements accountant the informationization, the original accounting and accounting control's environment has had the very sweeping change. It causes the data processing high degree of concentration and the automation, raised enterprise's accountancy efficiency, has formed the enormous impact on the enterprise internal control system. The internal control under the computer accounting system's environment, is a scope is big, the control procedure complex comprehensive nature control, as a result of the control method, aspect and so on object changes, the enterprise original internal control system has not been able to adapt the computerization accounting system's request, therefore further consummates the enterprise internal control system to be urgent. Does this article in view of these questions, how strengthen enterprise's internal control to put forward certain proposals. The enterprise through strengthens to the organizations and agencies management, the software and the hardware carries on the long-term unceasing maintenance and the consummation to accountant, facing the complex network environment, establishes the stable safety protection system, by consummates accountant under the informationization environment the internal control.