A naturalised Aussie tutor at a Sydney University is under investigation over comments he made on social media slamming his Chinese students as "international pigs" of sub-par intelligence.

The Sydney University Business Society has started a petition condemning Wu Wei, a Chinese-born Australian who teaches corporate finance classes, after he allegedly took to Weibo and WeChat to decry his students as "low IQ chinks".

"One of those international student pigs told me that, on behalf of the Australian-Chinese international student community, I have brought shame upon them all," Wu allegedly wrote.

"USyd's finance course is very hard – who knows how much money you low-IQ international pigs need to spend to pay for all those essaywriters (sic)."

Another Weibo post showed a Chinese passport clamped in a pair of kitchen tongs being burned above a toilet, with the accompanying caption: "All Chinese students do is complain about their school and their courses, it’s all worthless garbage".

Wu, who was born in China but became Australian since immigrating here, has been strongly criticised by the Business Society, which launched an anti-discrimination petition in response to his alleged remarks.

"The local PHD students are far more interesting than the Chinese students. We can discuss all kinds of multinational political issues and cuisines. This is way much better than your country’s (Chinese) students since all your conversations are just about complaining the school, complaining the course, absolutely rubbish."

"Mr Wu’s continual disrespect for Chinese International Students through frequent, abusive and xenophobic remarks on social media networks ‘Weibo’ and ‘Wechat' are appalling, shameful and unacceptable," the petition reads.

Professor Gregory Whitwell, Dean of the University of Sydney Business School, confirmed to ninemsn that the matter is being treated gravely.