This book will provide information about the mechanism of P solubilization and heavy metal tolerance of rhizobacteria. In addition, this book have sufficient information about previous experiments conducted on P solubilization and heavy metal tolerance of bacteria throughout the world. This book could be very helpful for them who are interested to learn about bacterial isolation techniques, bacterial media preparation and their physical and chemical characterization procedures which has been well depicted in this book. A chapter of this book have shown the effect of P solubilizing bacteria on P content and P uptake on a rice variety called Iratom 24. It is possible to acquire information about bacterial media preparation with heavy metals and maximum range of bacterial heavy metals (Cr, Pb and As) tolerance through reading this book. This book is enriched with pictorial view of bacterial growth for both experimental outcomes such as P solubilization and heavy metal tolerance. Finally, in this book a correlation between P solubilization and heavy metal tolerance was added in order to understand the role of P solubilizing bacteria in phytoremediation of heavy metal process.