Bug bites manifested as erythema, papules, papular rash, conscious itching, can be applied topically with glyburide lotion, cooling and anti-itching Chinese medicinal preparations such as dampicol ointment, compound camphor cream, etc., glucocorticoid preparations such as halometasone cream, dinaide cream, fluticasone propionate cream, mometasone furoate cream, hydrocortisone cream, etc. If localized redness and swelling are obvious, cold wet compresses can be used for treatment. If localized large blisters appear, use iodophor disinfection and a sterile syringe to extract the herpes fluid. At the same time, oral antihistamines such as levocetirizine, azelastine, loratadine, etc. are needed to avoid scratching to avoid secondary infection. If there is pain and even fever and lymphangitis, it is necessary to be alert to microbial infections and additional antibiotic treatment is needed if necessary.