Swelling after being bitten by ants may be an allergic reaction produced by the ants’ secretion of toxins or their internal components into the body. You can use a lot of water to rinse, glycerine lotion, take histamine drugs and so on. 1. Rinse with plenty of water: After being bitten by ants, rinsing with plenty of water can reduce the residual toxins in the skin. 2. Glycerine lotion: The toxin produced after ant bite will lead to skin allergic reaction, which may show intense itching, while glycerine lotion can make the itching situation less severe and reduce itching. 3. Take antihistamines: such as loratadine, which can be used to relieve chronic urticaria, pruritic dermatosis and other allergic skin diseases, and is therefore suitable for allergic reactions caused by ant bites. Adverse reactions: gastrointestinal discomfort, headache, rash. Contraindications: It is contraindicated for those who are allergic to loratadine or other ingredients in this product. If the symptoms of redness and swelling after being bitten by ants are not relieved or aggravated, it is recommended to go to the hospital in time for standardized treatment under professional doctors. All the above drugs should be used in accordance with medical advice.