Australian of the Year Rosie Batty has a simple message for federal MPs: stop blaming the victims of domestic violence.

Ms Batty will address a cross parliamentary group of MPs on Monday evening in Canberra, where she will tell them not to fall into the trap of victim blaming.

Australian of the Year Rosie Batty at Parliament House on Monday. Credit:Andrew Meares

"We don't realise we're doing it sometimes," the family violence activist told Fairfax Media.

"We expect the victim to leave, become safe, have their life compromised, and then blame them for being in the relationship in the first place."