Abstract Accounting computerization use scope and degree is increasing benefits for enterprises to deepen the convenient, and at the same time, its data security problems emerge in endlessly, computerized accounting exist great potential safety problems. How to ensure the data security become computerized accounting primary issue. This paper first analyzes the accounting computerization data security problems of various performance of its problems, and then the reasons for further analysis, the reasons from the internal control system of enterprise, and database management, the computer control of fraud, software function, the national laws and regulations related to take effective measures to prevent safety problems. Keywords: Accounting computerization；Data security；prevent
