M2/GDP is an important indicator to measure a country's financial deepening and financial development. The maintenance of the moderate M2/GDP ratio is very important to the development of the national economy. However, since my country's reform and opening up, this indicator has been on the rise, and its ratio is at the forefront regardless of whether it is compared with developed countries or developing countries. At present, this indicator has been rising to 200% in China. This phenomenon has become the mystery of my country's currency, known as the "mystery of my country's high M2/GDP", which indicates that there are some problems in my country, such as real estate market bubbles, inflation Wait. Therefore, studying the influencing factors of the high ratio of M2/GDP has a great effect on the development of my country's economy. This paper will study the high ratio of M2/GDP in my country from the perspective of money supply.