1. First, open China Medical Network official website and log in with your account. On the homepage of the website, find and click the "Personal Center" button to enter the personal center page.

2. Secondly, on the personal center page, find and click the "My Training" tab to enter the training management page. On the training management page, find the training course for which credits need to be printed, and click the corresponding "Credit Certificate" button.

3. Finally, click the "Print Certificate" button in the pop-up page. According to the prompt, download the credit certificate and print it with the printer.