Please solve my problem Face ID problem

Hello sundip,

It's difficult without knowing the specific Face ID problem but Apple has several documents dealing with Face ID issues.See if you can find your issue addressed in one of these:

If you see a "disabled" alert, this document deals with that specific issue --> If an alert says Face ID has been disabled on your iPhone or iPad Pro - Apple Support

If you just have issues with Face ID not working properly, read this document: If Face ID isn't working on your iPhone or iPad Pro - Apple Support