The causes of eyelid swelling in the morning are drinking a lot of water the night before, shedding a lot of tears, cardiogenic or nephrogenic diseases and so on. 1. Drinking more water: drinking more water before going to bed the night before, sleeping at night metabolism is slow, the water stays in the body more, the next morning get up there will be eyelid swelling, do not need special treatment, generally the morning of the swelling. 2. more tears: the night before due to a variety of emotional reasons lead to crying for a long time, but also the next day there will be swelling, this is recommended in the night before after crying, with an ice towel cold compress. 3. Diseases: such as heart failure, nephrotic syndrome, hypothyroidism, etc., may cause eyelid swelling, this is a pathology, you need to actively treat the primary disease, otherwise it will always be swollen. Eyelid swelling, if it is once in a while, consider physiological reasons, if it is long-term swelling, it is recommended to go to the hospital in time for examination and treatment.