(With the continuous development of it, the enterprise business system is becoming more and more dependent on it system, and the management requirements for the whole it are becoming higher and higher. "Three rely on construction and seven rely on management". At present, enterprises are gradually beginning to realize the importance of management. Statistics show that the construction of enterprise IT management started in the 1990s. Up to now, it infrastructure management including NSM (network system management) is still the most important stage of enterprise information management construction, whether in terms of cumulative installation or annual new installation. The main reasons are as follows:)