Red fire ants bite red swelling and itching can be treated with general treatment or medication. 1. General treatment: After being bitten by red fire ants, you can use soapy water to wash, which can neutralize the venom and reduce the irritation, and you can also apply cold compress locally to avoid aggravation of the symptoms of redness, swelling and itching. 2. Medication: You can use medication under the guidance of a doctor, such as loratadine tablets, cetirizine tablets, but also with the use of mometasone furoate cream and other medication, which can effectively relieve the symptoms. If the situation is more serious, you can also use topical boric acid solution wet compress. Usually need to observe the skin recovery, avoid scratching the skin, so as to avoid the invasion of bacteria and viruses, if the symptoms are serious, it is recommended to consult a doctor in time.