There is no quick way to reduce the swelling of the ear, and standardized treatment is needed to address the cause. Common methods to reduce swelling include cold compresses, oral antibiotics or anti-inflammatory drugs, oral anti-allergy drugs and so on. Specifically how to reduce the swelling of the fastest need to professional doctors according to the cause of the patient’s judgment, common causes are trauma, allergies, eczema in the ear. 1. Trauma: If the swelling is caused by trauma, the fastest way to reduce the swelling can be within twenty-four hours with a cold water towel wet compresses, more than twenty-four hours for hot compresses. If there is the presence of inflammation, it is necessary to take oral antibiotics or anti-inflammatory drugs, commonly used drugs such as amoxicillin, metronidazole, roxithromycin and so on. 2. Allergy: If the ear is simply swollen and not painful, and accompanied by itching symptoms, it is likely to be caused by allergies. Fast swelling can be oral anti-allergy drugs or antihistamines, commonly used drugs such as paracetamol, calcium gluconate. 3. Eczema in the ear: Eczema in the external ear canal causes swelling of the ear usually accompanied by itching, flaking, crusting and other symptoms. It can be treated with topical anti-eczema ointment, commonly used mometasone furoate cream, zinc oxide ointment and so on. All medications should be used under the guidance of a medical professional, do not self-medicate. It is recommended to consult a doctor in time to avoid delaying the condition.