This book is an outcome of compilation of updated study materials collected during my 27 years of teaching and research career. This book comprises 42 chapters sequentially arranged with equal emphasis on soil formation, soil properties and soil pollution. It describes clearly the soil as an earth's most important natural resources and considered as the backbone of food security of any nation. This book paves the students to understand various soil science concepts easily. I hoped that this book will certainly useful to the growing Agriculture and Geological students and teachers involved in higher education.