Police say that 32-year-old Sarah Giffard was in an intoxicated state when she attacked the victim, with the incident taking place on Plymouth Street, Swansea on 1 November last year.
A PCSO arrived on the scene within thirty seconds of the assault, with the victim having become unconscious.
The victim was taken to hospital, but his injuries, which included fractures to the skull, cheekbone and collarbone, fractures to two ribs and a bleed on the brain, were found not to be life threatening.
She has been sentenced to three years in prison.
Sergeant Craig Evans from South Wales Police said: “Sarah Gifford launched a violent, unprovoked attack on an unsuspecting victim in broad daylight while she was under the effects of alcohol. She is now about to pay the price for her actions, which were completely unacceptable.
“Those who cause criminality in the city will be dealt with robustly.
“High visibility patrols will continue throughout the summer as part of Op Sentinel.”
