Redness, swelling and itching after mosquito bites can be treated with topical glucocorticoid ointment, non-hormonal ointment, and antibiotic ointment when secondary infection occurs. Glucocorticoid ointments are commonly hydrocortisone cream, fluticasone propionate ointment, dianabed ointment, etc., whose main effect is to alleviate the inflammatory response and improve the local redness and swelling symptoms. In addition, mosquito bites can also be used non-hormonal ointment such as salbutamol ointment, its main effect is to improve the symptoms of local itching. If there is a local bacterial infection after mosquito bites, topical antibiotic ointment such as erythromycin ointment can be used for anti-infection and antibacterial treatment. If the symptoms of redness, swelling and itching continue to worsen after being bitten by mosquitoes, you should seek medical treatment in a timely manner, and should not take medication without authorization to avoid delaying the condition, the specific use of medication should be used in accordance with the doctor’s instructions.