The 2019 International Monetary Forum was held at Renmin University of China from July 6th to 7th. Li Lihui, former head of the Bank of China and head of the China Internet Finance Association blockchain working group, attended and delivered a speech. The digital currency is divided into three types, namely Legal digital currency, virtual currency and digital currency issued by large financial institutions. The statutory digital currency may affect the formulation of the central bank's future monetary policy. The volatility of virtual currency is difficult to predict in the future. The attempt by large financial institutions to issue digital currency is still difficult to assess. In this regard, Li Lihui believes that China should strengthen research in the field of digital currency and occupy the dominant position in new technologies in the digital currency field.