The unnamed 33-year-old has since been charged with attempted murder of the 72-year-old women after CCTV captured the full extent of the violent attack.
The disabled woman, whose name has not been released, was on her way to hospital and needed to change trains at Leszno, in south-western Poland, during her journey from her home town of Czestochowa.
On the first train, she met her attacker-to-be, who comes from the town of Ruda Slaska, and they spent the journey in conversation.
When they arrived at Leszno, he offered to help her catch her next train by pushing her in her wheelchair.
But the shocking CCTV footage shows the man pushing her to the edge of the railway platform before shoving her over the edge and onto the tracks below.
The man then jumps down after her, picks up a large stone and starts repeatedly and violently hitting her in the head with it.
He had battered her more than a dozen times before witnesses spotted what was happening and ran over to pull him off the woman and push him to the ground.
An ambulance was called and quickly arrived on the scene to take the woman to hospital where she is being treated for multiple injuries including head wounds and broken ribs.
Police arrested the man and charged him with attempted murder.
He is being examined by psychiatrists to decide whether he is fit to stand trial.