This book explains about micro particle drug delivery systems. It includes microcapsules, microspheres and microbeads preparation and evaluation techniques. It explains about the major applications in pharma industry. It explains about the spray drying and congealing techniques for the preparation of micro capsules. This book will be helpful for B-Pharmacy, M-Pharmacy and Pharm D students. This book will be helpful for research scholars working on micro particulate drug delivery system.