Since the December 2012 general election，which elected Shinzo Abe to his second term as prime minister，Japan launched so-called “Abenomics”. Its aim was to revive the sluggish economy with monetary policy and fiscal policy in a short time，and to guarantee the economic development and fiscal re-establishment in long term. However，“Abenomics” might bring about increase in sovereign debt risk in the long run. Meanwhile，Japan had to increase sales tax rate to fix the inequality of its fiscal system in order to deal with the social security’s cash-flow deficit. The increased sales tax would also offset the effect of the short-term economic stimulus plan. Therefore，Japan’s economy in the future would be heavily relied on the result of the structural reforms.