The taskforce, a pre-election commitment, had been asked to examine a range of issues, including the introduction of a sentencing option for courts to order offenders to undergo chemical castration.

It would also review current anti-libidinal treatment practices within the state's correctional system and consider whether they could be expanded or improved.

The taskforce would include representatives from Corrective Services NSW, the Department of Premier and Cabinet, the Justice Health and Forensic Mental Health Network, NSW Health, NSW Police, the Office of the Director of Public Prosecutions, the Public Defenders Office, the NSW Bar Association and the Law Society of NSW.

Victims would also be represented by the Victims of Crime Assistance League (VOCAL), Bravehearts, the Homicide Victims' Support Group, Enough is Enough, Adults Surviving Child Abuse and the Survivors and Mates Support Network.

Mr Grant said child sex offenders left their victims with life-long trauma and he was determined the justice system from courts to corrections made protecting them a priority.

"Anti-libidinal medication alone is not a cure-all, but I want to make sure we make the very best possible use of it, combined with other strong measures, to prevent reoffending," he said.

"If we can make improvements that save just one child from this horrendous crime, it will be worth it."

NSW Attorney General Gabrielle Upton said the taskforce was the latest step the government had taken to protect victims and deliver justice, following on from tough new laws including the possibility of life behind bars for child sex offenders.

It was expected to report to the government with recommendations by the end of the year.