A pregnant woman has been taken to hospital after a brawl on a street in Sydney's west.

Police were told a 23-year-old pregnant woman was pushed during the incident close to Punchbowl train station about 1.30pm today.

Video filmed from inside a nearby shop showed the group of people exchanging shoves and blows, with the brawl spilling onto the road itself.

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The pregnant woman was taken to hospital for observation.

A 38-year-old man suffered a minor injury to his face, and was treated by paramedics at the scene.

Officers from the Police Transport Command South west have begun an investigation into the brawl.

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