This book is an outcome of the depth study of Prospect of Jatropha cultivaton in marginal land of Nepal. This study has examined the cost economics of Jatropha and competitive crops, ecological requirements and cropping systems of Jatropha with other crops. It has analysed the economical, ecological, environmental and land use prospective of Jatropha for biofuel production. It has also identified the prospective regions of Jatropha in Nepal. This book will be useful to Jatropha grower, policy makers, traders, academicians and students as well. Further it is hoped that this book, as a reference book will be helpful to all people who take initiate to protect our earth from pollution and global warming. I think this book would be easy to read, informative and through I don''t claim exclusive credit to the book. Most of the materials have been collected from providing books, Journals, review and articles. This is the first edition and have some mistakes in contents. For this, I would like to apologize myself to all concerned with the word that it will be updated, corrected will come comprehensive way in the second edition.