There are often several causes of bleeding in the eyes of children found by parents: first, conjunctivitis. Sometimes conjunctivitis with pseudomembranes can cause the conjunctival sac of the eye to be covered with blood, and in severe cases, exfoliative bleeding may occur. In this case parents need to seek medical attention as soon as possible, topical medication as prescribed by the doctor, and regular review. Second, traumatic hemorrhage. This type of bleeding often has a clear history of trauma and is easier to diagnose. However, sometimes the child is not articulate and parents often find it when they pick the child up from kindergarten. Traumatic hemorrhage is usually more limited, and rarely is there extensive bleeding in both eyes. Beijing Children’s Hospital Ophthalmology Yu Jifeng third, bleeding due to abnormal blood function. Contrary to the elderly who have more brittle and less elastic blood vessels. Children’s eye surface blood vessels are very flexible, and general coughing, eye rubbing, and constipation are less likely to cause capillary rupture. If there is unexplained recurrent bleeding, also consider whether there are other systemic diseases, and need to visit the ophthalmology and hematology departments. Fourth, Kawasaki disease. Children with Kawasaki disease often have large subconjunctival hemorrhages in both eyes. Such children are often accompanied by fever, elevated blood levels, and enlarged lymph nodes, which are related to vasculitis caused by the child’s increased capillary permeability. In conclusion, if a child suddenly develops subconjunctival hemorrhage in the eye, he or she needs to be seen in a timely manner, have the fundus and systemic disease checked, and be treated with topical or systemic medications depending on the condition.