This book is a valuable addition in the research field of factors influencing FDI. In this research study it is tried to investigate what are the key factors influencing FDI and why these factors are are considered important for the inflow of FDI regarding host country. In this book mainly focus on three factors; Political instability, Rules and Regulations and Fluctuation in Economic Growth. These factors are considered crucial and analyzed critically by the investors prior to make decision for their investment in target country. In This book focus on situation of Pakistan regarding these factors and tried to measure what extent of relationsip exists between FDI and these influencing factors.