Children always rub their eyes, usually due to inverted eyelashes, dry eye, allergies, conjunctivitis and other reasons. 1. Inverted eyelashes: In babies with inverted eyelashes, the eyelashes will pierce the cornea, causing foreign body sensation and pain in the eyes, and the child will always rub his eyes. 2. Dry eyes: Babies with dry eyes will feel dryness, stinging and foreign body sensation, and will also rub their eyes unconsciously, as well as blinking and other symptoms. 3. Allergy: If there is allergy in the eyes, there will be symptoms such as itchy eyes, and the patient will go to rub the eyes, so as to relieve the itching symptoms. 4. Conjunctivitis: If the baby suffers from conjunctivitis, there will be secretions in the eyes, which will easily block the vision and cause symptoms such as foreign body sensation in the eyes, and the child will rub the eyes to relieve the symptoms. It is difficult for parents to determine by themselves which cause of eye rubbing is caused by their children, they should go to the ophthalmology department of the hospital in time for examination, and follow the doctor’s instructions for treatment.