Abstract: A series of complex profound changes caused by the economic globalization and China's reform and opening up make contemporary college student's ideology security confronted with a huge challenge.We should guide college students' ideological position with Chinese Marxism,make firm the foundation of college student's common ideology with the core value system of socialist ideology,control the right of ideology education and publicity with scientific system and advanced technology,strengthen education subject's approval consciousness of Marxist Ideology,innovate teaching modes and methods,and enhance the effectiveness of ideological education.These are the basic way to ensure the ideology security of college students.