According to the China Business Daily, on the afternoon of December 12, the Fourth World Blockchain Innovation Conference and the 2019 "Blockchain +" Technology Development Forum were held at the Beijing Friendship Hotel. Zhou Jingying, deputy secretary of the Party Committee of the China Chamber of Commerce, stated in his opening speech that the application of blockchain technology has now extended to many fields such as finance, the Internet of Things, intelligent manufacturing, and supply chain management. At present, major countries in the world are accelerating the deployment of blockchain. Technological development. China has a good foundation in the field of blockchain. How to promote the innovative application of blockchain technology and promote the integration of blockchain technology and economy and society is an important topic for everyone in this conference. I hope that this conference will put forward effective and feasible opinions and suggestions for the development of China's digital economy and blockchain technology, and jointly discuss the application innovation and development prospects of blockchain technology to promote the high-quality development of our economy.