Historical memory is the basis of historical identity, and historical identity is the premise of passing on from generation to generation. "Four Histories" education helps college students correctly understand the centennial glory of the Communist Party of China in uniting and leading the Chinese people in revolution, construction and reform. The hundred year journey is complex. We should clearly and thoroughly explain the integrity and progressiveness of China's revolution, construction and reform, the creativity and uniqueness of the road of socialism with Chinese characteristics, and the inevitability and struggle of the great rejuvenation of the Chinese nation. At the same time, we should pay close attention to the characteristics of college students and ensure the effectiveness of education by creating mechanisms, innovating carriers, and providing high-quality content.