At the 6th China Sixth China “Introduction” and “Going Global” Forum and the Sixth China Globalization Forum, Yu Wei, Chairman of Gao Weida Software Co., Ltd., said that blockchain technology is only part of the realization of digital currency. Can't replace all. Blockchain has its advantages, such as its mark, not tampering, etc., but there is really no way to overcome its inefficiency. We have done a lot of tests, the banks have a large amount of transactions in the same industry, the number of transactions is small, the transaction frequency is high, especially the Chinese banking system counts the number of blockchains in seconds, which can not be solved now. It may take technical genius to work hard and get one day to overcome it.