The game behavior is an outward manifestation of the game robot's intelligence,and the behavior selection is one of the important methods to improve robot intelligence.And the game behavior system is also an important research foundation of behavior selection.This article simulated the process of human game playing,and put forward the behavior process structure for the computer game robot.According to the system classification thought,the article built the robot's computer game behavior system,put forward the behavior planning method,and verified the effectiveness of the research result with the Connect6 game platform.