Two-year-old baby cold and runny nose with blood, mostly because of viral infection caused by the swelling of the nasal mucosa, so that the capillaries are exposed and easy to bleed. After 5-7 days after the virus gradually eliminated, nasal mucous membrane swelling disappears, bleeding phenomenon will also disappear naturally. In addition, in the late stage of the cold, because the nasal mucosa is easy to dry, so it will also be rubbed or dry nasal crust stimulation, thus bleeding phenomenon, but the amount of bleeding is small, in the form of silk mixed in the nasal mucus. You can use fragrant oil or cod liver oil drops into the nasal cavity to keep the nasal mucosa moist, the symptoms can be relieved. If your baby has frequent blood in the nose that does not stop bleeding easily, it is important to go to the hospital in time to clarify the presence of blood system disorders, etc.