A six-month old baby was found abandoned in a park in China's Guangdong province, along with a handwritten letter from her parents who said they were unable to afford the costs of raising the child.

The infant girl was left in Fengshan Park on Saturday (Jan 20) night in a stroller, which contained baby supplies including infant milk powder, medicine, clothes and the letter, reported Chinese media.

She was discovered by police on patrol, who called an ambulance.

According to the 1,000-word letter, the infant has epilepsy and needs to take anti-epilepsy medication every night.

Her parents added in the letter that they were unable to afford the high costs of the medication and would not be able to provide for her.

"What awaits her is nothing but death if she stays with us. She can't live on her own and can't receive the education she needs. Her whole life is ruined," the letter said.

"All parents love their children... I know this is selfish and I don't expect anyone to understand why I'm doing this. All I can hope for is that she grows up safely."

Details of the dosage of anti-epilepsy medication for the child were also included in the letter.

"If it's possible, please talk to her, and play with her little hands and feet... We will atone for this in our next lives," the letter added.

The infant is being cared for at a hospital, while the police are looking for her parents, reported local media.