The red eyes of 1-year-old babies may be caused by physiological factors such as crying, or it may be caused by diseases such as intraocular foreign bodies and conjunctivitis. 1. Physiological factors: If the baby cries for a long time and rubs his eyes with his hands, the patient may have conjunctival congestion, manifested as red eyes, generally stop crying, can be relieved after rest, do not need special treatment. 2. Foreign body in the eye: there will be a lot of fine particles in the air, if the baby’s eyes into the baby or the baby itself is inverted eyelid eyelashes into the eye, in the stimulation of foreign body, the patient can show eye redness, vision loss and other uncomfortable symptoms. 3. Conjunctivitis: one year old baby if you do not pay attention to hygiene, hand rubbing the eyes, dirty hands will bring viruses and bacteria into the eyes, thereby contaminating the conjunctiva induced infection, in the inflammation stimulation, the child can appear eyes afraid of light, redness of both eyes and other discomfort symptoms. It is recommended that one year old babies with red eyes should consult the hospital in time to assess their condition and follow the doctor’s instructions for treatment.