The ancient Greek theatre influenced modern western theatre in terms of technology, stock characters, structure and plot of the story. Modernist writers borrowed the concept of catharsis from Aristotle’ ‘Poetics’. Aristotle used the term catharsis to explain the effect of tragedy on audiences. Catharsis means ‘purgation and purification’. The scholars have argued about the different use of term catharsis. But most of them agree with ‘purgation’ and ‘purification’. Some scholars argue catharsis as being Intellectual clarification. The scholars draw the modern ***** in theatre from the late nineteenth century to early twentieth century. Modernism is a conscious practice of art, rejecting the traditional ways of practice and innovating new forms. The modern theatre has its own roots with its literature.