Red, swollen and itchy eyes are most often considered to be infections or allergies. Bacterial infections can lead to red, swollen and itchy eyes, or allergic reactions due to allergen stimulation. You can use cold towels at home to apply cold compresses. Allergies that cause red, swollen, itchy eyes need to be kept away from allergens first, and then medication can be administered for different causes. If the development of the eye condition is gradually serious, resulting in other serious complications, surgical treatment may be required: a. Physical therapy: cold towels or ice packs can be used for cold compresses, so that local blood vessels are constricted to reduce the occurrence of eye congestion, but also to reduce the vitality of local inflammatory factors, limiting the spread of inflammation, thereby reducing redness, swelling and itching. The main antibiotic drops for bacterial infections are oxyfloxacin eye drops, tobramycin eye drops, etc. Conjunctivitis caused by viral infections is mainly treated with acyclovir eye drops, ganciclovir eye gel, etc. In severe cases, oral or intravenous medication is required; 2. Allergy: anti-allergy eye drops are mainly used, such as cromolyn Allergy: mainly use anti-allergy eye drops, such as sodium cromoglycate eye drops, olopatadine hydrochloride eye drops, etc., and use antihistamines, such as paracetamol, loratadine, cetirizine, etc., as appropriate in combination with the condition. Third, surgical treatment: If the disease develops seriously, or if other serious tissue damage or eye structure abnormalities occur secondary to the disease, surgical treatment may be required. In addition, avoid rubbing your eyes with your hands in daily life and pay attention to the hygiene of using your eyes. Reduce the use of contact lenses to avoid irritation to the eye and affect eye recovery. Reduce the consumption of spicy and irritating foods during treatment and abstain from smoking and alcohol.