For a student of Yoga, Hathayoga provides the practical ground. The traditional of Hathayoga is a valuable gift given by the natha tradition to the world. The culy is deeply rooted in their own philosophical doctrine. goraksanatha was one of the most prominent of the natha siddhas who authored siddha-siddhanta-paddhati. The text chiefly deals with the philosophical doctrines of the natha tradition in a very systematic manner. The book explain the different Layers of the phenomenal creation and the yogic understanding of the human body. It narrates interrelation of microcosm and macrocosm the substrtum of the body and the method of union of microcosm and macrocosm.It further outlines the characteristics of an avadhutayogi. Special feature of this book lies with its emphatic statement regarding the futility of all the yogic techniques if undertaken in a mechanicle manner.