Bitten by mosquitoes and swollen for insect bite dermatitis, can be general treatment and medication, etc. to deal with. 1. General treatment: pay attention to local care, avoid scratching. Pay attention to personal protection, wear long sleeves and tighten the cuffs of pants in the field. 2. Drug therapy: patients with mild inflammation can use topical glucocorticoid creams such as halometasone, and oral antihistamine loratadine can be taken at the same time. The skin lesions or allergies can be treated with oral prednisone and other drugs for a short period of time. If secondary bacterial infection, erythromycin, ofloxacin and other antibiotic drugs can be applied for treatment. The use of specific drugs should be under the guidance of the doctor. It is recommended that patients seek medical advice in a timely manner and follow the doctor’s instructions for standardized diagnosis and treatment.