Setting up business is a key phenomenon in business world, which has become recently one of the key instruments to face economic and social problems and to accomplish development achievements. This report written for all Tunisians and foreign investors who are interested in setting up small business in Tunisia. This book analysis success and failure factors of small business in the world and more particular in Tunisia. It includes also all the general terms and conditions for setting up small business in Tunisia. This book is a professional guide especially for students, researchers, academicians and graduates to expand their knowledge in business world.