1. Fill in the invoice header, that is, the buyer's name, to ensure that the header information is accurate.

2. Fill in the invoice number, date, sales amount and other basic information of the invoice.

3. In the column of goods or services in the invoice, clearly describe the periodical information sold, including periodical name, periodical number, sales quantity, unit price, etc.

4. Clearly mark the sales amount, tax rate, tax amount and other related information on the invoice, calculate the corresponding tax amount according to the provisions of the tax law, and fill in the invoice.