This is an introduction to the Japanese economy. The general feature of the Japanese economy, together with its historical and geographical background, is first described. Its famous rapid economic growth in the 1960s are then analyzed quantitatively in the light of the econometric findings. The facts on the saving ratio, trade balances, technical progress, industrial structure, business cycles, economic development and so on are presented, and their relation to the economic performance are discussed. The elementary economic concepts and theories are also explained with illustrations from the Japanese economy, so that the book may be easily accessible to the general readers. The readers of the book will acquire a bird's-eye view of the Japanese economy and the theoretical elucidation of its special features.