The Economy of Japan had experience a tremendous growth since the end of the
Korean war. The growth of GNP in 1967 and 1968 was above 10 % (double digit growth period) which exceed countries such as Britain, France and Germany. The economy experienced a boost is due to many reasons, such as: enlargement of industrial facilities, massive adaptation of western technology and education, lower the military expense to 1% of GNP, relation with power nation, human resources and their spirit to achieve "zero defect program". But after the first and second oil crisis that occur from 1973 onward. The economy move downwards partially due to the poor management of economic policy. Although the government had attempt to adjust the economic policy but the recovery was slow. As the soaring of yen continues the demand for export has increase tremendously. With the concern of the United State of this problem, president Reagan and the G5 have signed an agreement with Japan called "Plaza Agreement" , the agreement stated that the exchange rate of Japan and Deutschmark can appreciate against the U.S. . Since then the yen value began to appreciate, Japan was going through a period of trade balance adjustment. While Japan is prepare to go through a period of trade balance adjustment, it will also suffer a period of recession, so the government strongly encourage business activities to strengthen the economy in order to prevent backwash effect. It was this event which boost up the GNP and raise the exchange rate. With this exchange rate advantage it stimulate business activity on housing and stock investment which created a bubble economy. During this period almost the entire country was involve in land speculation or other speculate activities. In this essay it will prove that land speculative activities had create many negative impacts to the Japanese society and economy. Firstly, it will describe the cause of land speculation. Secondly it will