A Chinese-Australian woman has been subjected to an abusive racial tirade by an older woman on a crowded Sydney bus.

Lindsay Li recorded footage of a woman - who she says spat on her, struck her with a trolley and then proceeded to call her a list of deeply offensive racially charged names - on the bus at midday on Wednesday.

It appears to be the same woman who launched a bizarre racist rant against a Chinese couple in Wynyard park in Sydney's city centre last month.

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Lindsay Li was racially abused on a Sydney bus by an older woman at midday on Thursday

She recorded the interaction, in which the anonymous woman calls her a 'f***ing ugly ch***'

The latest vision begins with the lady, who says in an ironically thick foreign accent: 'F***ing ugly f***ing ch**k.'

She then accuses Ms Li of dealing 'dirty drugs', before saying, 'You read yesterday in the newspaper? Konichiwa doesn't want you. Take your f***ing language and p*** off f***ing c***k.'

Ms Li said that 'no one intervened', even after she 'begged the bus driver for help.'

The older woman continued to lay down insults, culminating in demands of legal action - reasoning that because Ms Li had 'plenty of money' she would be the one that would 'pay for this'.

Next the anonymous lady referenced a cousin who was a lawyer, in an identical line of action to her argument last month in Wynyard park, in which she screamed: 'And sucked in, my cousin's a lawyer!'

The expletive-laden spray concluded with the lady spitting out: 'I'm Jewish from Israel ... and you are f***ing nothing.'

Ms Li has received legal advice in the hope that the older woman would be 'held to her actions.'

'Imagine if it was my 10 year old sister or my father that was assaulted and how difficult it would be for them to defend themselves!' she wrote on Facebook.

'I don't care what other idiots think. It's just important for me as an immigrant to this country that I don't feel like a second class citizen.'