Public interest litigation serves a vital role in the civil justice system. If offers a ladder to justice to the disadvantaged sections of the society, provides an avenue to enforce diffused or collective rights, and enable civil societies to not only spread awareness about human rights but also allows them to participate in government‘s decision making. It facilitates an effective realization of collective, diffused rights for which individual litigation is neither efficient nor a practicable method. The range and scope of Public Interest Litigation is vast as it is a mechanism to agitate any socio-economic public issue before the court which can be brought within the legal and constitutional mould. The concept of Public Interest Litigation can be understood as being concomitant to Art.32 with regard to Supreme Court and to Art.226 with regard to High Court. A public interest litigation writ petition can be filed in the Supreme Court under Art.32 only if a question concerning the enforcement of a fundamental right is involved. Under Art.226, a writ petition can be filed in a High Court whether or not a fundamental right is involved.