In this book Author brings out some genuine historical, theological and juridical concepts of relationship between religious institutes and their respective eparchial bishops. The scope of the book is to study the relationship between the religious institutes and the eparchial bishops in a juridical way. This book explains the nature of the power exercised by the eparchial bishops and the major superiors of religious institutes and their synaxis. And this book analyses on how both these authorities can work together. The chief purpose of this book is to highlight the relevant norms given in CCEO and CIC regarding relationship with religious institutes and eparchial bishops in the mission of the Church.