There is no fastest way to reduce the swelling of hornet stings, which can be relieved by flushing the wound, medication and surgical treatment. 1. Wound flushing: If you are stung by a wasp accidentally, you can use soapy water to wash the injured part, which can neutralize some of the acidic toxins and alleviate the local symptoms, and you can also use saline, hydrogen peroxide, iodine, etc. to flush repeatedly, so that the necrotic material can be effectively discharged. 2. Medication: If the degree of wasp stings is relatively mild, mupirocin ointment can be used topically to promote faster absorption of inflammation; if the pain is severe, ibuprofen capsules and diclofenac sodium capsules can be taken orally according to the doctor’s instructions to improve the symptoms of local pain. 3. Surgical treatment: If the degree of wasp stings is more serious, or even accompanied by abscess formation, local incision and drainage can be carried out through local infiltration anesthesia to remove necrotic tissues and relieve swelling and pain. If stung by a wasp, it is recommended to go to the hospital in time to avoid delaying the condition and causing other damages.