In China，the development of blockchain technology has been strongly supported，and related applications of blockchain have also been vigorously supervised. Blockchain is an application mode under the condition of multi-network collaboration，which promotes the innovation of business models in the fields of Internet of Things，industrial internet，mobile internet and so on. Blockchain industry still faces challenges in technology，management，cognition and industrial ecology. It is necessary to strengthen application guidance，application demonstration，technological innovation and regional coordinated development.