After children take money to buy things in the supermarket without permission, they are not allowed to call the police and punish the supermarket. According to the inquiry of relevant public information, we learned that because the child is under the age of 18 and has limited capacity for civil conduct, the civil activities he has engaged in that have nothing to do with the donation are invalid, and he can ask the supermarket to refund the money. Supermarkets are not entitled to fines.