Hands bitten by ants and red, swollen and itchy, belongs to the insect bite dermatitis, can be adjusted through general treatment, local medication, systemic medication and other measures. 1. General treatment: avoid hot water, avoid scratching and squeezing, avoid excessive force on the hands, you can use cool towels, ice cold compresses, can relieve itching. 2. Local medication: you can use glycerine lotion externally, which has the effect of astringency and itching, and you can also cooperate with glucocorticoid ointment, such as compound dexamethasone ointment, tretinoin cream and so on. 3. Systemic medication: If the area is large and the itching is severe, you can take antihistamines such as loratadine and ebastine, and in severe cases, glucocorticoid drugs such as prednisone and dexamethasone can be used. Hand ants bites and red and swollen and itchy, it is recommended to go to the hospital for examination, under the guidance of the doctor standardized treatment. Drugs need to be used in accordance with medical advice, do not self-medication.