[Machine Translation] The ancient times when domestically produced coins were used to build the capital, the medieval times when coins were imported from China, the Warring States period when the "silver rush" at Iwami Ginzan (Iwami Silver Mine) moved the world economy, reformers in Edo (Tokyo) who suffered from financial difficulties, the monetary policy of imperial Japan... The history of currency is full of episodes from the 7th century when unmarked silver coins appeared to the present day. From the 7th century when unmarked silver coins appeared to the present, the history of currency is full of episodes. This article traces the history of currency policy, paying attention to the circumstances of ordinary people, which have had a great impact on currency policy. This is a comprehensive history of money, a subject that still haunts us today and in the past.