The state government will be debating a new law that will require a minimum 20-year prison sentence for parents responsible for long-term abuse resulting in the death of their children.

The plan is to redefine the charge of murder to include death caused by an “act or omission with reckless indifference to human life”.

Attorney-General Yvette D'Ath said, "This child homicide offence seeks to capture those most awful cases that the Palaszczuk government wants to see convictions of murder and a minimum of 20 years for.”