Hand swollen by insect bites can be treated with general treatment, oral antihistamines, topical glucocorticoid ointment, etc. Serious cases should seek medical attention in time. 1. General treatment: local water to rinse the insect bites. Rinse gently, do not scratch, so as not to aggravate the local inflammation. 2. Oral antihistamine drugs: such as cetirizine. This product is an antihistamine preparation, which can relieve the symptoms of redness, swelling and itching of the skin, and can be used to reduce the swelling of the hand bitten by insects. It is indicated for the treatment of allergy-related symptoms such as chronic idiopathic urticaria. Adverse reactions commonly include drowsiness, dry mouth, and headache. Contraindication: It is contraindicated in people who are allergic to the product and those with severe renal impairment. 3. Topical glucocorticoid ointment: such as Denuded cream. This product can eliminate the fever, redness and swelling caused by local inflammation, so as to relieve the symptoms of hand swelling. This product can be used for contact dermatitis and seborrheic dermatitis. Adverse reactions are occasionally seen burning, itching and so on. Contraindication: prohibited for those who are allergic to this product. Hand swollen by insect bites after treatment, the symptoms still can not be improved, the patient should promptly go to the hospital, clear cause of the disease in a timely manner under the guidance of the doctor, so as not to delay the condition.