One of Australia's worst pedophiles is appealing his life sentence as "manifestly excessive".

Former childcare worker Ashley Paul Griffith was sentenced to 27 years without parole in October after admitting hundreds of sex crimes over nearly 20 years.

Griffith's lawyers, Gnech and Associates, confirmed that an appeal had been lodged on behalf of the 46-year-old Griffith on the grounds that the sentence was clearly excessive.

It is understood the appeal was lodged before Christmas and has not yet been heard by the courts, which could take several months.

Griffiths admitted 307 offenses against 65 victims aged between one and nine starting in 2003, including ongoing sexual abuse and producing child exploitation material.

He admitted 28 counts of raping girls aged three to five in Queensland childcare centers between 2007 and 2022.

In sentencing submissions, his defense asked for a sentence of 25 to 30 years in prison with a non-parole period of at least 15 years because his crimes were not as violent or extreme as other Queensland sex offenders who have been sentenced to life sentences.

But prosecutors asked for a minimum sentence of 30 years to life without the possibility of parole on the grounds that he engaged in "calculations and distortions" by targeting children while they were sleeping or taking them to remote areas of child care centres.

Brisbane District Court Judge Paul Smith sentenced Griffiths to life imprisonment with a non-parole period of 27 years, saying Griffiths was "morally corrupt and a high risk of re-offending".

The judge said Griffiths filmed all but one of his victims as he sexually assaulted him and the footage he shared with others had the potential to "live on the internet forever".

He said Griffiths could be heard on the video taunting the victim as she complained his abusive behavior was "disgusting" and told him to stop.

Smith said Griffith initially denied committing any crime but later admitted in a police interview while still downplaying his guilt.

Dozens of people read impact statements during the sentencing, with victims telling the judge their lives had been shattered and parents saying they felt "irrevocable pain and guilt".

Smith noted that some victims and their families have been severely harmed, and he expects that to continue.

He said Griffiths used "a degree of violence and emotional manipulation" to carry out the abuse.

Queensland Premier David Crisafulli was asked if Griffiths' case would become a priority for the government, and he replied: "You bet it will be".

"It's horrific," he told the media Thursday morning.

“When parents send their children away expecting them to be safe, it is an abhorrent breach of trust and we will defend our position forcefully.”

Crisafulli said the investigation, led by Queensland's Families and Children's Commissioner Luke Twyford, into how Griffiths was able to abuse his victims for so many years would be complicated by the appeal.

"I don't want the review to be delayed because there are a number of issues, including the blue card issue, that have to be reviewed," he said.

"Now, obviously, this appeal will bring some complications to the case, but I remain committed to the review because I don't think we can wait and leave the system without raising concerns, and I think Mr Twyford is able to The right person to overcome this complexity.”

Griffiths was arrested in 2022 when police searched his Gold Coast home and found more than 4,000 child abuse images and videos on his devices, documenting most of his crimes.

He also has an arrest warrant for alleged child sex offenses committed while working in New South Wales between 2014 and 2018.