Cultural semiotics, in its simplest terms, is not a type of research or exploration into culture, but rather a study of its hidden systems and intricate and complex issues. In cultural semiotics, culture is presented as a macro-sign system; therefore, this type of analysis is an activity that attempts to explain cultural actions in their social and individual aspects. On the other hand, human understanding of existence is an understanding that is programmed by culture and through linguistic and non-linguistic signifying systems. These systems shape human social activities and actions. Hence, culture is a system that includes natural and artificial languages, arts, religions, rituals, etc. The words of Imam Ali (AS), which are collected in the noble book Nahjul-Balagha, have all these characteristics. Accordingly, the present study aims to examine the issue of sign, which plays a very important role in the intellectual communication between the speaker and the audience, from the aspect of cultural function in the Imam's aphorisms. To achieve this, an analytical-descriptive method has been used. The findings of the study indicate that in order to understand the Imam's words in the cultural dimension of signs, it is necessary to use thought and activate memory on the part of the recipient in order to discover their content. Open cultural signs are more extensive and flexible compared to closed spaces; because the Imam did not limit these texts to a specific era, but rather the implications of these texts have spread throughout different eras.