Red eyes of infants may be caused by foreign bodies, lack of sleep, conjunctivitis, etc. If parents are not sure of the cause of their infants’ illness, they are advised to take their infants to the hospital for examination. 1. Foreign bodies: Red eyes of infants may be caused by foreign bodies entering into the eyes, such as sand, eyelashes, etc., which can make infants keep rubbing their eyes, thus making their eyes appear red. 2. Lack of sleep: If infants experience prolonged sleep deprivation and are overly tired, it may cause red eyes. 3. Conjunctivitis: Bacterial and other microbial infections, allergies, ultraviolet stimulation and other factors can lead to conjunctivitis in infants, the eyes may appear red, but also accompanied by photophobia, itchy eyes and other symptoms. When infants have red eyes, it is important to take infants to regular hospitals for examination and treatment in a timely manner so as not to delay the condition. In normal times, we should pay attention to the hygiene of the baby’s eyes, avoid using unclean hands or towels to contact the eyes, to prevent eye infections and aggravation of the disease. Pay attention to indoor air circulation to avoid environmental irritation to the eyes. Parents are advised to take their babies to the hospital for treatment to identify the cause of the disease and follow the doctor’s instructions.