AI skill is a very crucial skill, this skill has a very large value for human exploit. At present, AI skill has been utilized reliably in many professional domains, such as CN safety. In daily office work, folk can exploit this skill to meet the daily safety detection of information transmission and data operation. The concept of this skill is well known, and many books have been written about the key technologies. This article studies the adhibition of AI skill in CN safety analysis and processing, explains the specific performance of AI skill in CN safety. Using ANN algorithm, this paper constructs a security model of artificial intelligence technology in computer network, and carries out the simulation experiment. The data show that AI skill has high performance in CN safety.