Why the thunderbolt in iPad pro 2022 does not work?

Hello Xuejian12,

Welcome to Apple Support Communities. Which Mac Pro model are you trying to connect to your iPad? We're asking as available ports may vary according to the Mac model. Check this out:

Identify the ports on your Mac

To get started, please check out the information in the following resource about how to connect your iPad to your Mac using a cable:

Connect iPad and your computer with a cable

If your iPad is not recognized when connected to your Mac, try the steps in the following links:

If a Thunderbolt device doesn’t work with Mac

Check your device’s Thunderbolt connection to Mac

If your computer doesn't recognize your iPhone or iPad

We hope this information is useful. Kind regards.

Xuejian1,

We appreciate those details.

We recommend restarting your devices and keeping them updated as those steps assure you have cleared out any minor software issues and are running the most current version.

Update your iPhone or iPad - Apple Support

Update macOS on Mac - Apple Support

If you still have questions, reach out to us directly here as this may require closer guidance: Get Support

Cheers!

similar situation is occured "last year". And now,this problem doesn't solve.

I suspect this problem is hidden by Apple.

unfortunately,I don't know how to solve.