Child sex offenders could be jailed for life under new laws to be introduced into New South Wales State Parliament this week.

The NSW Government will honour it's election commitment to introduce legislation to increase the maximum sentence for sexual intercourse with a child under 10, from 25 years to life imprisonment.

NSW Attorney-General Gabrielle Upton, said the new laws will be ushered in to better protect children in the community.

"These are the worst crimes against the most vulnerable in our community, our children, our young people and too often sentences handed down don't align with community expectation," she said.

"The New South Wales Government is delivering on our election commitment and changing that balance."

The Government also plans to add 13 child sexual assault offences to the Standard Non-Parole Period Scheme, which provides judiciary guidance with sentencing.

Ms Upton said the new standard non-parole periods will be significantly higher than the current average sentences for those offences.

"This means that there is better guidance to the court of what community expectation is around the non-parole period... and it sends a very clear message that the sentences that should guide judges when they are making decisions, are longer sentences," she said.

"That's responding to community expectation, that people who violate children, our most vulnerable members of our community should be punished and punished harshly."

The Government has also announced it will provide victims of child sexual assault with more support including a plan for specialist judges to hear child sexual assault cases across the state.

Leonie Sheedy from the Care Leavers Australia Network welcomed the legislation and said she hopes the changes encouraged more victims of child sexual abuse to come forward.

"It's never too late to report a crime that was committed against you even if the perpetrator is long dead, it's very important that people come forward to the Royal Commission and tell of their abuse story," she said.