Melbourne (Agencies): Australian Prime Minister Julia Gillard refused to address New Zealand's Parliament during her two-day visit to the country this week.

New Zealand Green Party has opposed the government's decision for Gillard to speak directly to Parliament while in session on Wednesday, saying it would set an uncomfortable example, media reports said.

"In New Zealand, no head of government or head of state has addressed a session of Parliament and that's a principle that we're quite keen to keep," Greens co-leader Russel Norman said.

If it were allowed, it could permit future governments inviting all sorts of unlikable people, like (former US president) George Bush, for example, they had in Australia, that I think a lot of members of parliament would be uncomfortable with, he stated.

Instead, Gillard will address in Parliament's debating chamber, becoming the first foreign leader to do so.

"We're very welcoming of Julia Gillard addressing a meeting in the parliamentary buildings... We're very happy with that," Norman informed.

Gillard will leave for New Zealand on Tuesday on a two-day visit, starting in Auckland with an address to a business luncheon and a visit to a local school.

On Wednesday, she will be officially welcomed to Parliament, address the House of Representatives in the debating chamber and hold important discussions.