Swollen eyes may be caused by eye diseases, kidney diseases, heart diseases, allergies, physiological factors and so on. 1. Eye diseases: Conjunctivitis patients, because the eyes are infected by viruses, bacteria and other microbial infections, there may be redness, pain, swelling and other discomforts, you can follow the doctor’s advice to choose the appropriate eye drops treatment, such as levofloxacin eye drops, acyclovir eye drops and so on. 2. Kidney disease: such as nephrotic syndrome patients may have symptoms of eye swelling, may be due to the loss of large amounts of protein from the urine, plasma colloid osmotic pressure is reduced, resulting in tissue edema, the patient may also appear lower extremity edema and other discomforts. 3. Heart disease: patients with chronic heart failure may also experience ocular edema after waking up, mainly due to sodium retention. 4. Allergy: if the patient is allergic to cosmetics, it can also lead to ocular edema, and the patient should stop using cosmetics, and at the same time, can take anti-allergy drugs, such as loratadine and so on. 5. Physiological factors: If you drink a lot of water at night, cry, or have a bad rest, your eyes may appear edema the next day. You should pay attention to drink as little water as possible before going to bed at night, and make sure you have enough sleep in order to improve the symptoms of eyelid edema. It is recommended that patients with significant eyelid swelling accompanied by other discomforts should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.