One eye of the baby has a particularly large amount of eye droppings, usually due to conjunctivitis or dacryocystitis in one eye. 1. Conjunctivitis: it is the most common infectious disease of children’s eyes, which is mainly manifested as inflammation of one eye in the early stage of the disease. If it is not treated in time, it may be infected to the other eye, resulting in inflammation of both eyes, which can be treated by antibiotic eye drops, such as moxifloxacin eye drops and levofloxacin eye drops. 2. Dacryocystitis: It is caused by congenital developmental abnormality of the tear duct (such as tear duct obstruction), which leads to bacterial infection after the accumulation of tear fluid. Generally monocular onset, need to use antibiotic eye drops treatment, but also need to do the tear duct area massage, promote the opening of the tear duct, in order to avoid recurrence. Parents should bring their children to the ophthalmology department of the hospital for examination and treatment under the guidance of the doctor, and educate them to maintain good hygienic habits to avoid infecting the other eye.