A woman has been charged over the death of a one-year-old boy who died after being hit by a car while walking on a footpath in western Sydney.

The toddler was walking with his 50-year-old great grandmother along Marion Street in Auburn on April 7, when the vehicle crashed into the pair.

The boy was treated at the scene by paramedics then taken to Westmead Children's Hospital with where he died from his injuries.

His grandmother was treated for shock at Westmead Hospital.

The driver of the car, a 60-year-old P-plater, has been charged with dangerous driving occasioning death, negligent driving occasioning death and causing bodily harm by misconduct.

Her licence was also suspended.

She is expected to appear at Burwood Local Court in June.