When it comes to the historical role of the reform of legal tender, people often think of the excessive issuance of paper money by the Kuomintang, inflation and soaring prices. However, the reform of legal tender had other positive effects in the history of China. It ended the extremely chaotic and backward state in China's currency history for thousands of years, and to some extent, it adapted to and even promoted the development of China's commodity economy and national economy. Judging from the effect at that time, the reform of legal tender promoted economic development. Specifically, first of all, it unified the national currency and effectively promoted the development of commodity economy and the formation of a unified domestic market; Second, due to the decoupling of legal tender from cash, China's currency is completely unaffected by the fluctuation of world silver prices, and because legal tender is linked to pound, it can circulate in the world market, which is conducive to China's foreign trade development and international balance of payments; Third, at the beginning of the issue of legal tender, it was stipulated that the silver dollar should be exchanged for one yuan, but in actual exchange, 60% of the silver can be exchanged for 100% of the legal tender, which increased the circulation of paper money, and then legal tender was issued one after another, which eased the shortage of money in the past, prices began to pick up, and commerce and production were profitable, which stimulated the prosperity of commerce and the development of industrial production. Many phenomena show that after the reform of legal tender, the situation has been developing in favor of China's economy and the interests of other countries in China.