The article focuses on the teaching of Vietnamese idioms in close relation to Vietnamese communicative rituals. Idioms are not only fixed linguistic units with symbolic and profound meanings but also means of expressing cultural norms and patterns of behavior in everyday communication. By analyzing the role of linguistic rituals in Vietnamese language teaching in general and in teaching idioms to foreigners in particular, the article proposes a teaching procedure that integrates idioms with communicative rituals. This approach helps learners not only grasp the meanings of idioms but also apply them appropriately in accordance with Vietnamese cultural communication norms.