A Perth mother has spoken out about the hurt she has felt since being charged with common assault after hitting her child on the buttocks with a wooden spoon at home.

Tania, 35, was found to have used an unnecessary amount of force when she hit her nine-year-old daughter with the spoon in October last year at their Ellenbrook house.

Police prosecutors said the incident took place between 6pm and 8pm one evening after the girl took old hamburger meat out of the fridge after her mother had told her not to.

When the woman saw her daughter eating the meat, which had worming tablets inside and was meant to be given to their dogs, she hit her with the spoon. The force caused the girl to bruise.