There are many reasons for oedema in the eyes in the morning. If the oedema is unilateral, it may be caused by mosquito bites, inflammation, allergies or unilateral eye problems, which require treatment for different conditions to reduce the swelling. If the edema is bilateral, it is possible that localized lesions, such as eye lesions and allergies, may reduce the swelling after the application of topical medications. After excluding local lesions, systemic lesions, such as edema caused by drinking too much water before bedtime, should be controlled by the amount of water drunk before bedtime. If some women have morning edema, it is necessary to consider the special situation that occurs during menstruation. After excluding the above causes, it is systemic diseases that cause morning edema of the eyes, most commonly heart disease and kidney disease. Heart disease often has a history of heart disease, along with symptoms of heart failure and arrhythmia, inability to lie down at night or palpitations after activity. Kidney disease may be associated with bilateral ankle edema and increased foam in the urine, in addition to ocular edema. The appropriate tests need to be done for treatment, and diuretic drugs, especially tab diuretics such as furosemide and torasemide, if necessary, are used for good swelling treatment.