Hansika started her carried with TV serial, called Shakalaka Boom Boom. She acted a child's role in the Indian serial Des Mein Nikla Hoga Chaand, for that she got an award for favourite child award at Star Parivaar Award. She was also appeared in the film Koi Mil Gaya at her child age.

Hansika made her debut in the Telugu Movie Desamuduru, directed by Puri Jagannadh, opposite starring Allu Arjun. She played as Sanyasi role in that movie. It was a box office hit.

Hansika made her acting debut in Bollywood in Aapkaa Surroor-The Real Love Story. The Movie was released on June 2007 and it was a box office hit.

Hansika made her debut in Kannada film Bindas with Puneet Rajkumar. The movie was released on 15th February 2008. This is also a hit movie.

She debut in Tamil movie Maapillai. This was also moderate hit in the Tamil Movie Industry.