After being bitten by poisonous mosquitoes can be washed externally with soap and water, because mosquito venom is acidic, soap and water is alkaline, soap and water can neutralize the venom of mosquitoes. Can take oral anti-allergy, anti-itch drugs, such as levocetirizine hydrochloride capsule or dexloratadine capsule, imipramine extended-release tablets, epinastine hydrochloride capsule, shunerin tablets; can also be used externally non-hormonal drugs, such as furnace glycol lotion or compound polymyxin b ointment, lincomycin lidocaine gel. If the patient’s condition is severe, he can also use topical hormonal creams, such as mometasone furoate ointment or hydrocortisone butyrate ointment, dinaide ointment, fluticasone propionate ointment. Patients should avoid spicy and irritating foods and alcohol.