Abstract: The America-led western developed countries incisively depend on the network technology superiority to display their culture hegemony to the whole world.Presently,universities are the most important crowded regions with many network users which are the network culture important objects.Under the background of such serious conditions,undergraduates' consciousness of national defense is extremely easy to suffer from corrosion and influence.The western network culture hegemony easily weakens undergraduates' national defense emotion,revolutionary heroism,national consciousness,and paralysizes their suffering consciousness.Therefore,we should construct the Chinese domain name with Chinese characteristics to enhance the initiative of Chinese network culture,create high quality Chinese website to deepen the education of socialist ideology,build the service platformof campus network information to carry forward the mainstream advanced culture,strengthen the education of undergraduates' consciousness of national defense to enhance the new requirements of national defense education.To enhance undergraduates' consciousness of national defense is to strengthen the resistance ability ofwestern network culture hegemony.