An ACT man who allegedly thought he had arranged sex with a woman and her 13-year-old daughter has been arrested in Queensland.

Detectives from Queensland Police's online child exploitation branch Taskforce Argos swooped on the 55-year-old when he arrived in Brisbane last night.

They allege he used the internet to arrange what he believed would be sex with a Queensland woman and her 13-year-old daughter.

He was actually communicating with a Taskforce Argos investigator.

The man has been charged with using the internet to procure a child under 16 for a sexual act.

He appeared in Brisbane Magistrates Court this morning and the man, who cannot be named for legal reasons, was granted bail.

Police did not oppose bail and he has been ordered to return on November 26 for a committal mention.

Detective Inspector Jon Rouse of Taskforce Argos said police continued to urge parents to watch who their children are chatting with online.

"We also need to enforce that parents themselves need to take care when engaging with someone they have just met or barely know online," he said in a statement.

AAP