(ITIL aims to solve and correct these possible drawbacks. It provides a guiding framework and a sustainable improvement plan based on high-quality, reasonably defined and repeatable processes. For enterprises, the implementation of ITIL can contribute to the final improvement of service management. Reduce costs, shorten turnaround time, improve quality and enhance customer satisfaction. To enhance the integration of business and it. Reduce the occurrence of emergencies and carry out it activities orderly in the plan of sustainable improvement.)