Hello aspirant,

YES, you can do polytechnic after graduation but you have to clear your priorities. I have said this because, most students generally do polytechnic after class 10th or class 12th, and so, doing polytechnic after graduation can be a waste of time.

polytechnic or diploma courses can be done after passing 10th course or after passing 12th course . After the diploma courses you can opt for graduation in relevant discipline.

I hope that this will help.