The redness and swelling of the legs from ant bites is considered to be caused by the reaction of insect bites, and the patient can take medication and general measures to deal with it. 1. medication: patients with red and swollen legs from ant bites can use glycerine lotion to stop itching and astringent as prescribed by the doctor, and glucocorticoid ointment such as hydrocortisone butyrate cream and fludioxonil ointment can also be used. In addition, patients can also follow the doctor’s instructions oral chlorpheniramine maleate tablets, ketotifen fumarate tablets and other antihistamines. 2. General measures: patients in the leg by the ants after the phenomenon of redness and swelling, should be timely use of soapy water to wash the bites of the region, patients can also use ice packs in the affected area. When the symptoms of redness and swelling appear in patients with leg ant bites, they should consult a doctor in a timely manner, under the guidance of the doctor to carry out regular treatment and medication, and should not take medication on their own.