The Syrian playwright Sa'd Allah Wannus has especially well-developed intertextualities in his works, that is why thr authoress would like to investigate their functions. The object of this study are some plays written by this dramatist due to their similar convention of the 'theatre in the theatre'. She has presented the interextualities covering the signs of: the world of theatre, current reality and old-time reality. Each of these systems is a frame or a marker signalling the intertextuality and separating it from the text.The plays enhance the role of the theatre in contemporary society, they contain social criticism in the light of problems of the Arab world. Finally, these works call attention to Arabic tradition by enhancing its wealth and diversity.