Swollen eyes and swollen eyelids in children may cause health hazards or adverse effects. The causes of children’s swollen eyes and eyelids are divided into physiological causes as well as pathological causes. Parents should pay attention to analyze the specific causes, and if they are caused by pathological causes, it is recommended to go to the hospital promptly. I. Physiological causes 1, crying: if children cry more, and frequent rubbing of the eyes when crying, can cause swollen eyes and eyelids; 2, poor sleep habits: if children drink too much water before bed or stay up late, sleep deprivation, may lead to children’s eyes swollen, eyelids swollen; 3, postural edema: some children’s eyelids, eyelids of the local tissue, laxity is more obvious, and in sleep position This is the time when postural edema occurs, often with bilateral swelling of the eyes and eyelids. After getting up, with the change of position and standing for a period of time, the eye swelling and eyelid swelling will be reduced or disappear. Second, pathological causes 1, the body protein content decline: such as malnutrition, due to insufficient protein intake or excessive protein loss, so that the body protein metabolism in a negative equilibrium. When the total serum protein is lower than 40g/L and albumin is lower than 20g/L, low protein edema can occur. In addition, primary or secondary glomerulonephritis, nephrotic syndrome, diabetic nephropathy, hypertension, and lupus erythematosus nephritis can cause edema, causing swollen eyes and swollen eyelids in small children; 2. Trauma: local trauma to the eyelids can lead to increased vascular permeability, and small children can develop swollen eyes and swollen eyelids, often accompanied by pain and bleeding; 3. Blood circulation disorders: for example, heart failure and kidney failure can occur when metabolic abnormalities, which can lead to edema, which is more pronounced in the eyelid area and can manifest as swollen eyes, swollen eyelids; 4. Allergy: if the eyelids are diffusely swollen and do not appear painful, but can be rather itchy, you may be suffering from contact blepharitis, which is mainly due to an allergic reaction of the eyelid skin to allergens; 5. Acute inflammation of the eyelids: if the swollen eyes, swollen eyelids are accompanied by a palpable subcutaneous moveable masses, but there is no significant pain, then chalazion, also known as a chalazion cyst, may be present. If there is significant localized congestion and pain, it is a chalazion, also known as a blepharitis. In summary, the causes of swollen eyes and eyelids in small children should be clarified in a timely manner so that appropriate treatment measures, such as maintaining good sleep habits, avoiding exposure to allergens, or treating the primary disease in a timely manner, can be taken to avoid adverse effects on small children.