This research aims to examine different aspect of the relationship between national identity and reacting to cultural invasion of enemy naval Sciences of in Nowshahr university. This research regarding its goal is applied and regarding gathering it's data is descriptive and correlation one. Statistical population are 800 students of Sciences Nowshahr university of naval, volume of sample is determined on the basis of Krejcie and Morgan and is 260 people. Sampling was done randomly. Tools of gathering data is questionary. Data was analyzed through Pearson correlation coefficient and multivariate regression analysis. Findings show that there is a relationship between geographical national identity and reacting to cultural invasion of enemy but this relationship is weak. But there is a meaningful relationship between cultural national identity and political national identity and cultural invasion. Findings of regression analysis show that cultural national identity variable is a powerful predictor than political national identity regarding to reacting the cultural invasion of enemy.