The actor posted a video of himself at his residence in Jalsa, in which he describes the social networking site as a "welcome device".
Bachchan announced the launch of his Facebook page on Twitter a night before, saying: "T 842 - Ok .. some advance news .. Looks like I shall be on FaceBook from tomorrow ... looks like .. wait for confirmation !!"
He later tweeted: "T 843 - YIPPEE !! Am on FaceBook !! My ID : http://FaceBook.com/AmitabhBachchan . ANNDDD !! Its close to 8 lakhs in half an hour !! Keep it coming, Baby !"
NDTV Movies reports that Bachchan had 780,000 'likes' within an hour of joining the site.
The 69-year-old actor has been a strong advocate of social media, utilising Twitter, his written blog and a voice blog to interact with his fans, who he describes as his "extended family".
With over 3 million followers, the actor is the most popular Bollywood star on Twitter, ahead of both Shah Rukh Khan and Priyanka Chopra.
"T 842 - Just a hop skip away from 3.3 million followers .. !!! Thank you all without you it would never have been possible !!," he tweeted previously.
The star's Twitter handle was recently confirmed as the highest-valued Indian account on the microblogging site, worth an estimated £740,809 ($1.14m).