Some children who are bitten by mosquitoes leave dark spots, i.e., hyperpigmentation, which generally do not require special treatment and can subside on their own, and if necessary, they can follow the doctor’s instructions to use medication or physical therapy. For some children, the black spots left after localized mosquito bites can gradually fade over time until they disappear, so there is no need to take special treatment, and parents should pay attention to their skin care. In daily life, children should pay attention to sun protection, avoid ultraviolet radiation, and eat more vitamin-rich foods, such as kiwi, tomatoes, etc. If the dark spots have not faded for a long time, if necessary, you can follow the doctor’s instructions for local use of 5% hydroquinone ointment, 5% arbutin cream, dianabed cream and other drugs, there is a certain effect of lightening the dark spots. Parents can also take some of their children to seek medical treatment through laser and other physical means to achieve the purpose of lightening hyperpigmentation. Parents are advised to give medication to their children under the guidance of specialists, and not to use drugs or prescriptions indiscriminately on their own to avoid adverse consequences.