1. Log in to the electronic tax bureau, enter the "I want to pay taxes" page, and select tax declaration and payment; 2. Select the comprehensive declaration and find the consolidated tax declaration of relevant tax items; 3. Select stamp duty in the list of tax items, and click the tax source collection on the right; 4. Click Add Favorite Information; 5. Click Add, select the tax item to be taxed, enter the tax amount, and click Save; 6. Check the saved stamp tax source collection form and click Next; 7. The system automatically generates a stamp duty declaration form, rechecks the declaration content, and then clicks Declare if it is correct.