Daily mail reported that the BBC worker wearing headphones sitting on a chair at the background could be seen watching the clip of the adult content as the woman removed her bra in the Raunc#y movie scene.
Ms Raworth, 49, was presenting a live piece on the England cricket team's victory over South Africa, but eagle-eyed viewers noticed the screen over her shoulder.
Around 3.8million viewers watched the show and one person tweeted:
The actress was wearing a black jumper while standing over a man during the clip which could be seen on Monday evening.
In what is believed to be an action movie, she then removed her bra to reveal her B.reasts during the striptease.
Speaking on the incident, a television source condemned the act and told The Sun: 'This has gone down like a lead balloon at the BBC. It is totally unprofessional.The BBC said it is investigating the incident.