Children’s cold and eye boogers may be related to nasolacrimal duct obstruction, conjunctivitis and so on. 1. Nasolacrimal duct obstruction: Nasolacrimal duct is a channel between the inner part of the eye and the nasal cavity, which can be blocked when there is inflammation and infection in the organism. After a child has a cold, the secretions from the nasopharynx block the lower end of the nasolacrimal duct, causing an increase in eye discharge. 2. Conjunctivitis: children’s resistance decreases after a cold, such as not paying attention to personal hygiene, with bacterial contamination of the hands after rubbing the eyes, can cause eye infections, showing conjunctival congestion and edema, hemorrhagic spots, accompanied by watery or mucous secretions and other symptoms. There may be other reasons for children to have a lot of cold eye boogers, it is recommended to go to the ophthalmology department of the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.