Hello @丽萍 董
First please refer this step-by-step guide:
https://support.microsoft.com/en-in/help/4015397
Step 1. Unplug and restart your printer
Step 2. Check cables or wireless connection
Step 3. Uninstall and reinstall your printer
Step 4. Install the latest driver for your printer
Step 5. Clear and reset the print spooler
Step 6. Change a printer's status to "online"
Then I would recommend to run sfc /scannow to repair the Windows 10 system files. Or run printer troubleshooter : Settings> Update & Security > Troubleshoot.
Furthermore, we could also dig into Event log Microsoft-Windows-PrintService/Operational to see if there's obvious errors.
Best Regards
Karlie
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