1. Go to the Yishui county government service website, select the "Enterprise Service" column, and select "Enterprise Management" from the drop-down menu.

2. After entering the business administration page, select the "business license renewal" service and enter the processing page according to the prompts.

3. Fill in the basic information of the enterprise and upload the required materials, including business license, organization code certificate, tax registration certificate, etc.

4. Pay relevant fees, either online or at the designated bank window.

5. After submitting the application, wait for the industrial and commercial department to examine and issue a new business license.