The Conservative MP said that she is hoping to use the ITV reality show as a platform to discuss her views on reducing the current 24-week time limit for abortions, reports The Mirror.
Landing at Brisbane airport on Monday night, the 55-year-old declared: "I'm doing the show because 16 million people watch it.
"Rather than MPs talking to other MPs about issues in parliament, I think MPs should be going to where people go.
"If people are watching I'm a Celebrity on television, then that is where MPs should be going."
Referring to her stance on abortion, Dorries said: "There are certain causes that I'm interested in, one of which is '20 Weeks'.
"That is why I'm doing the show. I will be talking about this issue around the campfire. I hope there will be some lively, heated debates.
"I'm not going in there to upset people, but I have opinions."
Photo gallery - I'm a Celebrity rumoured contestants:
Copyright: Rex Features Richard SakerThe MP for Mid Bedfordshire, who admitted that she has never seen I'm a Celebrity, joked: "I didn't know it was a real jungle until three weeks ago.
"I'm frightened of rats, but then again I do work with them."
Dorries has previously appeared as a guest star on Have I Got News for You.
Ex-Birds of a Feather actress Linda Robson has also arrived in Australia ahead of the show, while comic Brian Conley, soap stars Charlie Brooks and Helen Flanagan, Doctor Who's Colin Baker and reality TV star Hugo Taylor have also been rumoured to be taking part in recent weeks.
I'm a Celebrity... Get Me Out of Here! launches on Sunday (November 11) at 9pm on ITV1.
Watch a promo for I'm a Celebrity below: