The development of 5G technology and industry has gone through ten years，and countries have shifted from 5G technology and industrial layout to application competition. In 2021，5G applications in China showed a vigorous development trend，which has achieved a breakthrough of “0-1” and entered a new stage of development of “1 to N”. Most industries are in the initial stage of 5G large-scale application，and strategies should be implemented according to different types of industries. With the in-depth integration of 5G and the industry，5G 2B industry will emerge，greatly expand the existing 5G industrial chain and build a new industrial system.