The HEMP party said it's had a fruitful meeting with the Palmer United Party over support for industrial and medicinal cannabis.

HEMP spokesman Andrew Kavasilas travelled from the north coast to meet with PUP Senator Dio Wang in Canberra on Wednesday.

Mr Kavasilas said the meeting was part of a preference deal done between the two parties at the last election.

He said Senator Wang promised support to push for a Federal inquiry into cannabis as a medicine and food.

"We got a strong position from them to support an inquiry into the use of medical cannabis and more specifically the scheduling of cannabis at a Federal level to allow for any kind of meaningful research for medical or scientific purposes," Mr Kavasilas said.

"What the State Governments are talking about now and the Greens are all quite hollow and nothing can happen unless the Federal Government steps in on this," he said.

Mr Kavasilas said the HEMP Party believe the PUP Senator will follow through and give serious consideration to the idea of an inquiry.

"I'd like the Palmer United Party to just propose an inquiry be held, but they are going to do their own research through Hansard and the parliamentary library and I am sure they will put a pretty concise position together but look it's only governments that can change the law not the Palmer United Party or the Greens or the Opposition so we really have to engage with the government on this," he said.