Newborns with bloody boogers are firstly caused by dryness of the nasal cavity. The child’s nasal cavity is particularly dry, often due to other reasons such as fever, and if there happens to be boogers, forcibly picking them out will lead to blood in the boogers. You should give your child more warm water to drink, use a cotton swab dipped in warm water to clean the nasal cavity, or even use glycerin to smear the nasal cavity, so as to moisten the nasal cavity, so that the situation of blood in the booger can be effectively improved. Once again, it is due to rhinitis, if long-term nasal congestion, runny nose, consider it is due to rhinitis, we should promptly carry out rhinitis treatment, such as massaging the Yingxiang points around the nasal cavity or taking antihistamine drugs, such as loratadine and so on.