Abstract In the history of China’s information technology development, Accounting Computerization has played a very important role. However, because of the accounting backwardness situation, such as, manual accounting system, undeveloped technology, lack of professional personnel and, the not-well-established internal governance mechanism, it causes the using of accounting computerization, the financial software, a disorder situation. Meanwhile, a limitation of understanding, makes the software developing followed behind international development. With the development of information technology, accounting computerization is facing more challenges. Since China's accounting computerization still exists some problems, to solve the these problems, we must acquire advanced science and technology and train professional computerized accounting personnel, so that we can keep up with international technological development, especially for information technology implementation. In present market economy rapidly changing environment, the application of accounting computerization, is necessary for enterprises to get timely, accurate and complete financial information, thereby it enhances the company the usefulness of the decision-making, improves its management efficiency and economic performance, continuously upgrades the core competitiveness in the market. However, computerized accounting system is not a general application software, is the organic integration of the accounting information system with the enterprise management system, as well as the extraction and transformation of enterprise management philosophy and style, business processes, accounting and financial management. Because of its own characteristics, accounting computerization is still lack of unified planning and organization, the internal control system is still need to be improved. But we believe, as it emerged with information technology, the accounting computerization will become more and more perfected and developed with the IT developing. At present, most accounting computerization soft wares are applied on simulating manual accounting systems, booking, calculation and reporting are the main functions of those typical verification accounting software. Meanwhile, with modern information technology development and the advent of e-commerce, the recession of accounting functions, the more participation in the business operation and strategy decision-making, the current accounting verification software, reveals a apparent limitation of the functional scope or capacity of the information, far away from the needs of enterprise management. The rapid development of accounting computerization, have significant impact on the internal auditing trail, auditing methods and auditing contents. To adapt it to the need of development of accounting computerization, The internal auditing must have innovation on the methodology and improvement of qualificated personals. Using the scientific theory and methods for the accounting computerization system implementation, continuously training complex professionals to meet the need of computerized accounting is our important task of the moment. Therefore, this paper will focus on the discussion of the problems of accounting computerization and its developing trend, the internal control system, and the affection on existing accounting method and its countermeasures. Key words:accounting computerization problem countermeasures Internal control