The introductory chapter will throw light upon the key concept of Subaltern Studies and Discourse Analysis. It gives the basic idea of post-colonialism as it is necessary to know about post-colonialism to understand subaltern theory. The postcolonial theory studies the ‘Third World’ nations as they are put in the margin by the ‘First World’ nations. Postcolonial literature is internally a diverse cluster of writers and writers. The postcolonial writers are involved in the struggle against the colonialism/imperialism