Check Apple Adapter Original or Not

Is this a power adapter for an iPhone, iPad, or Mac? Only would it potentially be possible to determine if the adapter is an authentic Apple device is with Macs via System Information > Hardware > Power > AC Charger. For the iPhones/iPads, then as the others have already told you ... you can't.

you can't

only way you can be 100% sure is if you purchased it directly from apple or an official reseller

If you bought the Apple charger directly from Apple, an Apple Store or an Authorised Apple Reseller, it most certainly is original.