When a patient’s eyes are too swollen to open, the first step is to identify the cause. There are many causes of eye swelling, first of all, trauma can cause eye swelling. When a patient suffers from eye trauma, inflammatory exudation due to soft tissue damage to the skin can cause eyelid swelling. If this occurs, an ice pack can be applied in the early stages of trauma for cold compresses, which can reduce inflammatory exudation. Alternatively, a wet compress of magnesium sulfate solution can be applied to reduce the swelling of the eye. Eyelid swelling can also be caused by infection, such as bacterial infection causing conjunctivitis or acute cellulitis, which may also cause localized swelling and pain and require antibiotics for anti-infective treatment. If the skin of the eye is allergic to allergens, the eye may also be swollen. If this occurs, oral anti-allergy medication is needed to relieve the symptoms. This condition also requires further examination at a hospital to identify the cause and provide targeted treatment according to the cause.