Bilateral redness and swelling under the eyes is generally common in patients with allergies after exposure to dust, pollen and other allergens, which can lead to allergic allergic reactions in the body, manifesting as redness and swelling of the eyes and face. It can be done by keeping away from allergens as soon as possible, applying cold and wet compresses locally, and taking oral anti-allergy medications such as loratadine if necessary. The allergic allergic reaction in the body can be reduced to relieve the symptoms of redness and swelling under the eyes. Unilateral redness and swelling under the eye is most commonly associated with mydriasis, with hard nodules palpable in the center of the redness and significant pressure pain. The swelling can be treated with a combination of oral antibiotics and eye drops. In addition, patients who fall and injure the soft tissue under the eye during strenuous exercise may also experience localized redness and swelling. Patients can be treated with continuous local ice, followed by hot compresses after 48 hours, oral blood-boosting medications if necessary, and emergency ophthalmology visits to rule out serious visual impairment such as rupture of the eyeball.