There are many reasons for two-month-old babies to have tears in their eyes, such as crying, nasolacrimal duct incompatibility, conjunctivitis, foreign body irritation and other reasons. 1. Crying: two months baby, when crying will appear in the phenomenon of tears, is a normal physiological phenomenon. 2. Nasolacrimal duct incompetence: congenital tear duct obstruction and other causes of children with tear duct incompetence, can also lead to two-month-old babies appear tearful performance, but also more eye secretions, photophobia and other symptoms of discomfort. 3. Conjunctivitis: bacterial, Chlamydia trachomatis and other pathogenic bacteria infection caused by infectious conjunctivitis, in the inflammation stimulation, can also cause the two-month-old baby tearing performance. 4. Foreign body stimulation: external air, dust or towels and other foreign body stimulation, can also lead to two months baby tearing performance. It is recommended that children with frequent tearing should consult a doctor in time to assess their condition and choose the appropriate treatment under the guidance of the doctor.