This study employs the method of linear regression to examine the competition behavior of TV console industry in the North America market and affection of the TV console developer¡¦s action on the competitors¡¦ sales volume share in the same month. The data only include the hardware and software sales volume of the main competitors-PlayStation 3, Xbox 360 and Wii in this generation and their action after publicly announcing. Main findings of research show that price reduction, console improving and releasing big titles have influence upon the sales volume of opponents. The influence of price reduction action is related to the position of TV console: PlayStation 3 and Xbox 360 have a similar position and their action will affect each other, but the console of different position ¡V Wii not be affected. The action of console improving and releasing big titles apparently shows that TV console in similar position have more influence on each other.