il fait du revision...

Hello Vishal.
Could you explain a little more about what you are wanting to express with some context?
Are you wanting to express something like "He is doing some revision"
If so then you need to write "Il fait de la révision" or maybe "Il est en train de réviser"

Bonjour Vishal !

Hum, I'm sorry but your sentence doesn't make sense in French :)

If you meant to say "He's doing revisions / He's revising", the French would be:
Il fait ses révisions, or more colloquially  
Il révise.

If that's not what you meant, please expand, and I'd be happy to help!
À bientôt !