Swollen eyes for a day is mostly due to excessive drinking before going to bed, inflammation and infection, trauma and other reasons, patients can change the habit of drinking water before going to bed, physical therapy, medication and other ways of treatment, to relieve eye discomfort. 1. Excessive drinking before bedtime: If the patient is due to excessive drinking before bedtime leads to metabolic abnormalities, the patient’s eye water accumulation caused by excessive eye swelling, the patient needs to avoid excessive drinking before bedtime, avoid staying up all night, general rest can be relieved, do not need special treatment. 2. Inflammatory infections: conjunctivitis, keratitis and other patients because of ocular inflammation stimulation or allergic reaction, patients can appear eye swelling and other symptoms, patients can follow the doctor’s instructions to use tobramycin eye drops, orotidine hydrochloride eye drops and other medications, to promote the recovery of the condition, improve eye discomfort. 3. Trauma: If the patient’s eyes are swollen due to impact, the patient can apply cold compresses to the eyes at an early stage and hot compresses to the eyes after 48 hours to relieve eye discomfort and promote swelling. It is recommended that patients with significant eye swelling consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.