Cosmology and Astronomy are some of those topics of Extact Sciences’ towards the development of which the Jaina School of Pirsvanitha and Vardhamina. Cosmology is the study of the universe; its birth, evolution, and ultimate fate. Mahivira has contributed a lot. This School, noted For its mathematicophilosophic pursuits, flourished in India very much close round about the same period in which the School of Pythagoras flourished in Greece, that is, in sixtth century B. C. and later on, The vast available ancient Jaina literature is primarily religion cosmology philosophy oriented, but the use of mathematics is found in abundance, showing that the Jainas at that time had developed mathematics to a great extent. The ancient ]aina literature is divided into four main groups, called prathmanuyoga,' karaunuyoga, carananuyoga and dravyanuyoga where looking to the importance of science, most of the literature of the karananuyoga group deals with mathematical, astronomical and cosmological concepts besides the study of cosmos and self and the Karma Theory, As a matter of fact For this study, two worlds, one the macroworld and the other microworld, are to be well manifested to a human intellect and with this object, in view, the Jaina scholars in ancient India have worked on Astronomy, Cosmology and the Karma Theory with mathematical approach.