The baby’s tears and boogers may be related to the factors of conjunctivitis and nasolacrimal duct blockage, which are analyzed as follows: 1. Conjunctivitis: bacterial as well as viral conjunctivitis may cause babies to have the above situation, in addition, bacterial conjunctivitis may be accompanied by yellow purulent discharge of boogers, and viral conjunctivitis may also appear in the eye congestion, photophobia and other symptoms. 2. Nasolacrimal duct blockage: babies who have a blocked nasolacrimal duct may often experience the above conditions. The baby’s tears and boogers may also have other causes, such as physiological factors, it is recommended that can not be relieved, or accompanied by other symptoms, timely to the hospital for relevant examinations, clear causes after active symptomatic treatment.