The internet speed is slow. When the network speed of Fujian electronic invoice is slow, it will seriously affect the speed of entry, which will lead to slow invoicing, and the server of the invoicing system is crowded, which can also lead to slow. Invoice refers to the business vouchers issued and collected by all units and individuals in buying and selling goods, providing or receiving services and engaging in other business activities. It is the original basis of accounting and an important basis for law enforcement inspection by audit institutions and tax authorities.