In 2019，the scale of users in the netcasting industry has further expanded，and almost all netizens have entered the network audio-visual era. This paper mainly analyzes the whole netcasting industry from four aspects：general situation and current situation of the industry，policy hotspots and analysis，problems and countermeasures，development trend and prospect. It is found that the new content of netcasting is reduced，the overall development of the industry tends to be rational，the head effect is still significant，the differential competition between platforms is fierce，the reputation of long video has been improved，and the profit mode of video platform is more diversified. At the same time，the national policy escorts the netcasting content，and the industry responds positively. New trends mainly include strengthening cooperation at the platform level，new technology enabling the network audio-visual industry，serialization，IP adaptation，advanced on-demand，micro-variety，live streaming，etc..