Legal analysis: the hospital has an invoice. According to China's laws and regulations, when units and individuals sell goods, provide services and engage in other business activities to collect money, the payee should issue invoices to the payer. Hospitals are units that provide services and issue invoices. If it is a public non-profit organization, they can't provide your invoice. Their receipts (industry-specific receipts) are as valid as invoices.

Legal basis: Article 19 of the Measures for the Administration of Invoices in People's Republic of China (PRC). Units and individuals that sell goods, provide services and engage in other business activities collect money from outside, and the payee shall issue an invoice to the payer; Under special circumstances, the payer will issue an invoice to the payee.