Historical memory is the "history" recognized by the community and the sharing of past events by the members of the community. Historical memory is an important prerequisite for generating national identity. The corresponding relationship between symbolic memory, plot memory, value memory and natural identity, strengthened identity, and understanding identity provide the internal logic for historical memory to generate national identity. The Battle of Huaihai is an important historical memory of the Chinese National Community and an important historical resource for the construction of national identity. Using the historical memory of the Huaihai Battle to solidify the national identity of college students follows the following practical path: strengthening the value function of ideological and political classes to carry historical memory, deepening the emotional experience of historical memory through ritual exercises, and leveraging the advantages of the media to create a social atmosphere of historical memory.