The parties can go to the website of the tax bureau of the city where the drawer belongs. If every tax bureau in official website has an inquiry system for the authenticity of invoices, you can go to the national tax website where the drawer is located. Enter the invoice code, invoice number and other information to query.

Identification and issuance of ordinary VAT invoices;

1. Each VAT invoice has an invoice code and an invoice number, with 12 digits as the invoice code and 8 digits as the invoice number. First, you should check whether there are such two sets of figures on the invoice.

2. Each invoice shall be stamped with the special seal for the taxpayer invoice of the billing unit, with the taxpayer identification number, generally 15- 18 digits;

3. You can take the invoice to the collection and management department or ticket department of the national tax authority in charge of the billing unit to help identify the authenticity;

4. Check online. At present, the tax system of many big cities may have opened the online ticket checking system. The website is also printed on the invoice for inquiry;

5. If the invoice is original, you can only read paper. Real ticket paper is thin, tough, with clear watermark and good lead printing quality. The producer seal at the top is brightly colored;

6. If you don't bother, call the other tax bureau to ask. The tax number is on the special invoice seal below the invoice, and you can find the other tax bureau according to the first six digits of the tax number. If you don't know, you can consult the tax bureau where your unit is located, because they are all online now.

Measures for the Administration of Invoices in People's Republic of China (PRC) Article 24 Any unit or individual shall use invoices in accordance with the provisions on the administration of invoices, and shall not commit any of the following acts:

(1) Lending, transferring or introducing others to transfer invoices, invoice producer seals and special anti-counterfeiting products for invoices;

(2) Receiving, issuing, storing, carrying, mailing or transporting invoices printed, forged, altered, illegally obtained or abolished without authorization;

(three) the use of invoices;

(4) Expanding the scope of use of invoices;

(5) Replace invoices with other vouchers.

The tax authorities shall provide convenient channels for inquiring the authenticity of invoices.