Hi @Dungnguyen1,
This is a international community and I have translated your previous post to English using Google Translated, please keep all future posts in English so that other users may more easily understand you! 
Note! A previous deleted answer said Xperia X does not feature a fingerprint sensor. This is incorrect.
If you want to set a fingerprint lock on your device you can do so if you go to: Settings > Lock screen & security > Fingerprint Manager. Then follow the instructions to complete the setup.
Let me know if this answers your question or if there is anything else you are wondering about.
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