Aryan is 13 years old, and Suhana is all of 10.
"Son and daughter won gold in taekwondo nationals. Suhana was like a newcomer (aggressive)...Aryan fought like a thespian (technical), " Shah Rukh posted on his Twitter page.
The competition was organised by the Maharashtra Taekwondo Academy Monday.
Last year in October, the Korean government had chosen Shah Rukh for an honorary belt in taekwondo.