Prime Minister Malcolm Turnbull has warned One Nation and his own outspoken backbencher George Christensen that demonising all Muslims is playing into the hands of extremist groups.

Key points: Suggesting Muslims are not part of Australia "exactly what the terrorists are saying", Turnbull says

Suggesting Muslims are not part of Australia "exactly what the terrorists are saying", Turnbull says Turnbull reiterated he disagrees with Hanson's migration views

Turnbull reiterated he disagrees with Hanson's migration views Christensen's comments "directed at extremists"

"Tagging all Muslims with the crimes of a few is fundamentally wrong and it's also counter-productive," Mr Turnbull told commercial radio station 3AW.

"Seeking to demonise or denigrate all Muslims or seek to alienate all Muslims and suggest they're somehow not part of Australia or shouldn't be in Australia, that is exactly what the extremists and terrorists are saying to the Muslim community."

One Nation leader Pauline Hanson delivered her first speech to the Senate earlier this week, warning Australia was "in danger of being swamped by Muslims, who bear a culture and ideology that is incompatible with our own".

Sorry, this video has expired Pauline Hanson delivered her first speech to the Senate earlier this week.

She went on to call for a ban on Muslim immigration.

Mr Turnbull has rejected that position.

"I was asked about her [Hanson's] views on migration and obviously everybody knows I don't agree with them," Mr Turnbull said.

Mr Christensen sounded his own warning about Islam in the House of Representatives last night, calling for immigration to be restricted from countries where violent extremism is prevalent.

He said many immigrants in recent years did not share what he called "Australian values".

Sorry, this video has expired George Christensen called for a restriction on immigration from "extremist" countries.

"Why did they choose to come to Australia in the first place?" he said in the Lower House.

"There are other countries that they would find less offensive, countries where they could enjoy a similar level of oppression and violence to which they are accustomed, which they obviously want.

"It is not necessary to travel halfway around the world to come to Australia and demand that Australians change their culture, their society and their laws to match those of their former homeland."

Mr Turnbull told 3AW he understood Mr Christensen's comments to be directed at extremists.

"He was talking about, as I heard it, Islamist terrorist ideology, and that is absolutely the focus of so much of our counterterrorism work," he said.

Mr Turnbull said it was in the national interest to say "we are the most successful multi-cultural society in the world, Australian Muslims are part of that successful multicultural society".