165438+1eat in the restaurant in October, and make up the invoice in February 1 1 You can issue an invoice. According to the Measures for the Administration of Invoices in People's Republic of China (PRC), when units and individuals sell goods, provide services and engage in other business activities, and collect money from outside, the payee shall issue invoices to the payer. As long as the business really happens, even if there is no invoice at that time, it is ok to open it later. There is no stipulation in the Measures for the Administration of Invoices in People's Republic of China (PRC) that invoices cannot be issued across months.