Police have made eight arrests after anti-drug trafficking raids across south-east Queensland.

One former Bandidos gang member was arrested today, along with seven alleged associates.

Police say he was involved in trafficking crystal methylamphetamine (ice) and methylamphetamine oil which can be converted to ice.

The owner of the Rouge Coffee and Cafe at South Brisbane, where one of the first Bitcoin ATMs in Queensland was installed, has also been arrested.

Police said the cafe was alleged to be a commercial front for drug trafficking.

Police conduct a raid on the Rouge Cafe in South Brisbane. (AAP)

The bitcoin machine was also seized and will be forensically examined.

Bitcoin, a digital currency, is attractive to criminals in enabling them to hide their criminal activity, police said.

Queensland's anti-bikie taskforce executed 18 search warrants across Queensland as part of the investigation.

The raids end a two-year joint Taskforce Maxima and Crime and Corruption Commission (CCC) investigation, dubbed Operation Juliet Wave, that has focused on Bandidos gang members and associates from the club's Centro chapter.

Before the raids, which took place simultaneously in Brisbane, Logan, Cairns and on the Gold Coast, Operation Juliet Wave had already seized drugs worth $2.6 million and charged 53 people with serious offences.

Police from Queensland's anti-bikie taskforce have made eight arrests after the raids. (AAP)