Children’s skin ulcers after being bitten by mosquitoes are considered to be a kind of allergic reaction, and the treatment includes medication, etc., and should be treated according to the doctor’s instructions. Mosquito bites in children often cause dermatitis, which is actually an allergic reaction. Patients may show skin damage such as pimples, bumps, skin ulcers, etc., often accompanied by varying degrees of itching, tingling and other symptoms. Children with skin ulcers after being bitten by mosquitoes can use 75% alcohol or povidone-iodine for local disinfection, or use saline to rinse the local wounds to avoid causing infections before applying some antibiotic ointment, and the doctor will choose topical antibiotics and systemic application of antibiotics to treat the patient according to his or her condition. Commonly used drugs are penicillin, ceftriaxone, erythromycin, ofloxacin and so on. At the same time, we also need to carry out anti-allergy treatment, you can use antihistamines, antihistamines have a good anti-itch, anti-allergy effect, can be used to treat itching, redness and swelling caused by mosquito bites, commonly used drugs benadryl, loratadine, cetirizine hydrochloride, ibastine and so on. If the child has symptoms of discomfort, the child should be led to the hospital in a timely manner, so as not to delay the condition or cause adverse reactions.