Invoices are divided into ordinary invoices and special VAT invoices. Ordinary invoice: it is mainly used by business tax taxpayers and small-scale VAT taxpayers. Ordinary VAT taxpayers can also use ordinary invoices when they cannot issue special invoices. Ordinary invoices consist of industry invoices and special invoices. Special invoices for value-added tax are the product of China's new tax system. It is an invoice set by the national tax department according to the needs of value-added tax collection and management, which is specially used for taxpayers to sell or provide value-added tax taxable items.