With the development of socialist market economy and the deepening of the reform, enterprises play an increasingly important role in promoting China's economic development, and the key to the success or failure of enterprise management is the level of internal control management. Internal control audit can not only help enterprises to check and fill in internal control deficiencies and promote their improvement, but also improve enterprise process management and enable enterprises to continuously improve their own soft power. On the basis of expounding the relevant overview, methods and procedures of enterprise internal control, this paper puts forward some existing problems and imperfections, and puts forward the corresponding countermeasures, in order to provide some guidance for the practical work of enterprise internal audit.