The incident took place at the Tilak Nagar Metro station at 9:58 AM. The woman, aged 31, jumped on the train track and was hit by it. The train was coming from Dwarka.
She was rushed to Deen Dayal Upadhyay Hospital.
It was not known as to why the woman took the extreme step.
In May, at least four cases of suicide were reported at various metro stations in the National Capital Region.