Ali Zhao, aged 32, and her 11 month old baby, Kiki, were last seen leaving an address in Colehill on foot at 2.30pm yesterday afternoon, Monday 2 June.
Inspector Bob Jacobs, of Dorset Police, said: “We are becoming increasingly concerned for the welfare of Ali and Kiki as it is believed that Ali was upset when she left.
“I urge Ali to make contact with the police – we just want to make sure she and Kiki are safe and well.
“If anyone has any information about the whereabouts of Ali and Kiki please call 101 urgently.”
She is described as Chinese, five feet seven inches tall, very slim with long straight black hair. She has a grey four wheeler pushchair with her.
Anyone with information or knowledge as to Ali and Kik whereabouts should call Dorset Police on 101 quoting incident number 02:385