The new Australian Federal Police-led centre in Brisbane will be opened on Tuesday by Pacific leaders and Attorney General Mark Dreyfus.
The centre will train new police and act as a coordination hub when Pacific nations require additional policing support in times of major events or crises.
Up to four police training centres of excellence will also be built in Pacific nations as part of a $400 million regional policing pact.
The commissioner of the Royal Papua New Guinea Constabulary will be on hand for Tuesday's opening in Pinkenba amid major reform in the Pacific's largest police force.
Commissioner David Manning has shown the door to more than 400 police officers, or six per cent of the force, in the past two years.
Reasons included incompetence, ill-discipline, corruption and law-breaking, a Sydney audience was told on Monday.
"This is a sizeable number but it had to be done," PNG Internal Security Minister Peter Tsiamalili said.
"The force is better off for it."
PNG's Internal Security Minister Peter Tsiamalili says the crackdown on dodgy cops "had to be done". (Mick Tsikas/AAP PHOTOS)
Mr Tsiamalili, speaking at the PNG Investment Week summit, acknowledged law and order was a key investment concern and was critical for economic and social development of his nation.
Besides cleaning out deadwood, senior PNG police have been receiving management training in Sydney while the ranks had been opened to senior police from other Commonwealth nations.
That was boosting morale and helping tackle crime, the minister said.
"We've come a long way from the crime situation of decades past," he said.
However, crime rates remain high in PNG with Australia warning travellers as recently as Monday to exercise a high degree of caution.
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