This note scientifically tries to investigate one of the national security dimensions with the subject of the cultural security from the Nahj al- Balagha view. The cultural security is really preserving the traditions, values, conventions and national identity. The aim of this paper is to study the backgrounds of creating the cultural security in the society and its pathology from the point of Imam Ali (peace be upon him) with respect to his sayings in Nahj Al-Balagha. With the thematic studying (examination) of Nahj Al-Balagha and with studying books and articles which are codified about the different dimensions of security specially the cultural security, the most important factors creating the cultural security are: the enhancement of intelligence and knowledge, beliefs, extending encouraging good and discouraging bad, tawalla (love of, obedience to, alliance with or loyalty to Imams and their cause) and tabarra (dissociation from, disobedience to, renunciation and abandon of the imams ‘adversaries) , creating a right model and Alavi’s culture, preserving the past true virtues, immunizing through strengthening the family institute and expanding marriage and self-esteem and establishing justice and preventing poverty and unemployment in the society. The most important obstacles to the cultural security are: constituting the uncertainty and doubt in the cultural system, cultural invasion, and eclecticism, the lack of qualification of the heads of governments and their excessive luxurious life and ambitions in the worldly life. Undoubtedly, acting according to the Imam Ali’s orders protects the society against the cultural aggression which is one of the enemy’s weapons in order to overthrow the government from the view of the supreme leader of Iran.