The common causes of puffy eyelids in the morning are: drinking a lot of water before going to bed, allergic blepharitis, chronic dacryoadenitis, nephrotic syndrome and so on. 1. Drinking a lot of water before going to bed: If you drink too much water before going to bed at night, it is easy to lead to water retention in the body, can not be discharged in a timely manner, so it will cause puffy eyelids in the morning. It is recommended that you do not drink a lot of water at night, and when your eyelids are swollen, you can use a towel to apply a wet compress to promote the disappearance of edema. 2. Allergic blepharitis: usually due to allergic reactions of the local skin of the eyes to indoor cotton wool, mites and other allergic reactions, resulting in increased vascular permeability of the local tissues of the eyelids, fluid leakage, and then the eyelids are swollen. 3. Chronic dacryoadenitis: The lacrimal gland is located in the orbital lacrimal fossa. When the lacrimal gland prolapses, part of the glandular tissue enters the eyelid subcutis, and if inflammation occurs here, it will cause eyelid edema and pain to the touch. 4. Nephrotic syndrome: This disease causes water retention in the body, which cannot be excreted in time. Its main clinical manifestations are hypoproteinemia, large amount of proteinuria, edema and so on. Not only will it cause swelling of the eyelids in the morning, but it will also cause edema in other parts of the body such as the lower limbs. All in all, eyelid swelling in the morning, there are physiological reasons and pathological reasons, if it is caused by disease, it is recommended to go to the regular hospital in time to treat the symptoms.