Industry is the core subject of the national economy. In recent years，the Party Central Committee and the State Council have attached great importance to financial services in the industrial field，especially increasing the financial services assistance to small and medium-sized industrial enterprises，so as to stabilize and activate the operation of the entire “industrial chain”. Small and medium-sized enterprises are controlled by the domestic financial risk prevention and control mechanism. Under the normal situation of the epidemic，the difficulty and high cost of financing are more prominent，and the operation of the industrial economy is facing great downward pressure. The public service platform based on blockchain provides a good medicine for the financing of small and medium-sized industrial enterprises and a reliable basis for the risk assessment of financial institutions. The public service platform integrates emerging technologies such as blockchain，Internet of things，privacy computing，etc.，draws on，analyzes，and forms a data risk assessment model of mutual recognition among financial institutions，creates a credible and dynamic data ecological pool，and truly realizes the transformation of static risk assessment into a new dynamic，reliable，and reliable leap forward risk assessment model. At the same time，in the context of the national unified market，the public service platform helps to optimize the industrial chain，becomes an important support for enterprises’ international competition，and promotes the high-quality development of China’s economy，stability and long-term development.