The most common diseases that cause swollen feet and swollen eyes in patients are the following: 1. Chronic nephritis, nephrotic syndrome, and chronic renal insufficiency. It is mainly because the kidney itself is diseased leading to water excretion, while a large amount of protein loss will also lead to low protein edema. In the role of the above-mentioned factors, patients will also have swollen feet and legs. 2, liver insufficiency, mostly seen in patients with cirrhosis, because the liver’s ability to synthesize albumin is reduced, the human body appears hypoproteinemia resulting in swollen feet and legs. 3, heart failure, patients with heart pumping failure, so that the body’s water can not be effectively discharged from the body, will also cause swollen feet and legs. 4, primary thyroid function Hypothyroidism can also lead to swollen feet and eyes, and can be accompanied by symptoms such as coldness, weakness, unresponsiveness, and drowsiness.