The outbreak led to the postponement of resumption of work and pressure on the manufacturing industry. It is expected that the PMI index of the manufacturing industry will fall further in February，especially for small and medium-sized enterprises. In order to help small and medium-sized enterprises to return to work and return to production，the government has issued a series of supporting policies. The industries greatly affected by the epidemic are electronic industry，automobile manufacturing，panel industry，home appliances and automation equipment，etc.