The 18-year-old woman has been charged under Section 3 of the Dangerous Dogs Act 1991.
The attack happened between 3pm and 3.40pm on Sunday in a park near Heathhall community centre in Dumfries.
The four-year-old girl was taken to Dumfries and Galloway Royal Infirmary where she was treated for a superficial bite wound.
It is understood that a young black and tan coloured Alsatian dog bit the girl on the leg.
A report is being prepared for the procurator fiscal.