The Queensland Government will investigate the need to regulate underage combat sports after a children's kickboxing event on the Gold Coast over the weekend.

The clash between Jasmine Parr, 8, and Georgina Barton, 7, was held at Broadwater PCYC on Saturday night for $100 prize money.

Child Safety and Sports Minister Phil Reeves says he was appalled by images of the girls in the fight.

Mr Reeves says he has instructed the director-general of the Department of Communities to investigate the situation.

He says he understands children may enjoy the sport but that there are greater considerations.

"Kids would enjoy riding on a bike without a helmet these days but what do we do is we make sure that kids wear a helmet," he said.

"Sometimes kids enjoy things that may not be safe.

"It's up for the community - not just government but the community and families involved and the sporting authorities - to make sure kids are safe but enjoy themselves at the same time."

Jasmine Parr's father is kick-boxing world champion John Wayne Parr.

Premier Anna Bligh says she was disturbed by the event.

"Many people who saw images of seven and eight-year-olds kickboxing for money would be as concerned as I am," she said.

"The Minister today has asked for a review of this sort of sport to see whether we should be regulating it.

"I'd be interested in the views of other mums and dads."

The Australian head of the International Sport Kickboxing Association says children should not be fighting for money.

Association president Robert Murdoch says the State Government needs a regulating body for contact sports but that he believes kickboxing is safer than rugby league.

"I don't think young kids should be fighting for money - no, I don't," he said.

"It's a different thing if their parents are getting reimbursed for expenses to get to the place - that could be a different issue - but they definitely shouldn't be fighting for money."