Cryptocurrency is a decentralized System. Cryptocurrency basically a blockchain technology where use a ledger system. whether we can say that the central banking system could take the Cryptocurrency and when a country accepts this Useful transaction system. Then it would be a good future. There are many countries accept cryptocurrency. If the government take control of the cryptocurrency so that investors are feeling very comfortable to fund with them. Need to calculate to ensure stability in the cryptocurrency. There are a lot of factors puting them volatile. There is still a lack of Industrial capital. Cryptocurrency can take place of national currency by 2030.