In our country to vigorously implement and improve the process of internal control system, because there is no unified evaluation standard, the level of internal control of accounting information system between different levels and different types of enterprises is inconsistent, can not meet the enterprise requirements for the quality of financial reporting and risk. Therefore, it is necessary to construct an evaluation model that suits the characteristics and requirements of our country, to analyze the accounting information system from the factors of internal control Angle, and to establish a set of effective and feasible internal control system that meets the national conditions of our country and the needs of the development of enterprises with universal applicability. In this paper, the accounting information system is evaluated based on OPM3 model and the internal control evaluation framework of the accounting information system, so as to provide specific, feasible and effective evaluation methods for enterprises.