Elderly people with swollen eyes are firstly considered to be caused by physiological reasons, in addition, it may also be caused by granuloma, orbital and eyelid tumors or systemic diseases such as nephritis, heart failure, etc. It is recommended to consult a doctor in time for treatment. 1. Physiological reasons: drinking too much water before going to bed, poor rest, skin laxity due to ageing, etc. can cause the eyes of the elderly to look swollen, and there is no obvious discomfort that can be treated without special treatment. 2. Eyelid swelling: Inflammation of the eyelid glands by pathogens can lead to redness, swelling, heat and pain in the eyelids. It can be treated with antibiotics such as levofloxacin in the early stage. 3. Orbital and eyelid tumors: Abnormal proliferation of orbital and eyelid tissues leads to swelling of the eyes, which can be removed by surgery or treated by radiotherapy or chemotherapy. 4. Systemic diseases: Systemic diseases such as nephritis or heart failure can cause systemic water and sodium retention, resulting in eyelid swelling, active treatment of primary diseases and use of diuretics such as furosemide is beneficial to eliminate eye swelling. Elderly people with swollen eyes that cannot be relieved for a long time or are accompanied by other discomforts are advised to consult a doctor in time for examination and treatment.