The application of artificial intelligence technology in game NPC enables NPC to show more realistic behavior and reaction ability. Through the research and development of artificial intelligence technology, NPC has become a thinking and intelligent game object in the game, adding realism to the game environment. This paper studies the artificial intelligence technology of game NPC, and discusses the application method of artificial intelligence technology in game NPC. In the game industry, this technology has made remarkable progress and has been successfully applied to the development of games. Through artificial intelligence technology, the behavior of game NPC is more real and credible, providing players with a richer and more interactive game experience. The application of artificial intelligence technology in game NPC brings new possibilities and improvements to the game experience, which enables NPC to show more realistic behavior and response ability. Through this study, we hope that the game NPC will have more innovations and breakthroughs, and present a more wonderful game world for players.