A grandmother feared for her life when she was allegedly bashed and repeatedly stomped on in a horrifying attack.

Kim Dawson, 52, is still traumatised two days after the terrifying ordeal outside her Byford home on Perth's south-eastern outskirts on Friday night, which left her bloodied and bruised.

Shocking CCTV obtained by Nine News shows Ms Dawson allegedly pinned down on the ground by a woman and two teenagers.

'I thought they were going to kill me,' Perth grandmother Kim Dawson (pictured) said

Ms Dawson tries to fight back before she's allegedly pushed back on the ground.

The alleged attack continued for 90 seconds before a neighbour rushed to Ms Dawson's aid and intervened.

She claims she was attacked by a neighbour and her two teenage children after she confronted the woman about her son's alleged threatening behaviour.

'I close my eyes and keep seeing them jumping on my head,' a distraught Ms Dawson told Nine News.

CCTV shows Ms Dawson allegedly pinned to the ground as she's repeatedly stomped on

'I thought they were going to kill me actually because each time they jumped on my head I could feel blood running down my face. I'm shocked I don't have any broken bones.'

Ms Dawson suffered two black eyes and has had trouble sleeping since the alleged attack.

Neighbours claimed Ms Dawson's alleged attackers have terrorised residents in Byford community for years.

Some admitted they're now too scared to leave their homes, Nine News reported.

Police are investigating Friday's alleged attack but charges are yet to be laid.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000