Mosquito bite red swelling is very large and hard belongs to the insect bite dermatitis. Early found by the mosquito bite to rinse with water, can be localized with topical glycomet lotion, while cold wet compresses can also accelerate the redness and swelling subside. If the local allergic reaction is serious, or combined with infection, you need to give timely drug treatment. 1, glucocorticoids: with anti-inflammatory, anti-allergic, immunosuppressive and anti-proliferative effects, can reduce inflammation caused by local redness, swelling, heat, pain and other symptoms. Local medications are mainly used, commonly used drugs are dexamethasone acetate, mometasone furoate, etc.; 2, antihistamines: for certain metabolic reactions characterized by tissue edema has a better effect, has a good anti-itch, anti-allergic effect, can relieve the itching, redness and swelling symptoms caused by mosquito bites. Commonly used drugs are Benadryl hydrochloride, edema effect is obvious, chlorpheniramine maleate has a good anti-allergic and anti-itch effect; 3, local anesthetics: mainly on peripheral nerve endings, can temporarily reversibly block the generation and transmission of sensory nerve impulses. In the state of consciousness, so that the local sensation temporarily disappears, thus producing pain relief, anti-itch effect, can counter the stinging, burning pain, itching and other self-conscious symptoms caused by mosquito bites, mainly for symptomatic treatment; 4, local stimulant drugs: local use of menthol, camphor can act on the skin cold sensory receptors, causing skin vasoconstriction, with cooling, anti-itch effect.