Queensland's first female top cop sworn in

Katarina Carroll has been sworn in as Queensland police commissioner, making her the first woman to hold the top job.

Ms Carroll began a distinguished policing career 26 years ago before taking on the role of Queensland Fire and Emergency Services Commissioner in December 2014.

New Queensland Police Commissioner Katarina Carroll was sworn in on Monday.Credit: Queensland Police

She replaces Ian Stewart, who resigned after six years as the state's top cop and 46 years in the police service.

Ms Carroll is Queensland's 20th police commissioner.

"I am honoured to take on the role to serve not just this wonderful but the whole state of Queensland," she told reporters.

She will embark on a listening tour in the coming weeks to meet with troops face-to-face.

"I want to work closely with my frontline - look at their health, their wellbeing and in particular their mental health.

"I have always cut through the layers and gone straight to the front line in terms of what their issues are. I will continue to do that because I need to hear from them."

The commissioner said security against terrorism would continue to be a priority and vowed to make the service more efficient.

There was also a warning: bad behaviour from offers will not be tolerated.

"I expect them to be the most professional officer they can be, not only working with each other but also serving the community."

Ms Carroll's career started in general duties in 1983 before working as a detective in the drug squad, crime operations and ethical standards.

AAP