This book is designed to research on developing supporting industries in the Northern region of Vietnam with two localities which selected by the research team as the research area, they are Thai Nguyen and Bac Ninh provinces - These are localities with the results of supporting industry development in the best group of Northern Vietnam. Research findings are used as a basis for proposing recommendations to further develop supporting industries in Northern Vietnam in particular and Vietnam in general. Simultaneously, the most basic arguments about supporting industries are also synthesized and presented in the book, this is the theoretical basis for the author to study the actual content in specific areas. The book is a reference for policy makers, researchers, graduate students of schools educate about economic and business administration majors.