If infants have too many boogers, they need to go to the hospital for consultation and treatment to clarify the causes. 1. Anatomical factors: The nasal cavity of infants is not yet well developed, the nasal cavity is short, the nasal passage is narrow, and the nasal cavity is rich in blood vessels and lymphatic vessels, after being stimulated by the outside world, the nasal secretion increases, but infants cannot discharge it by themselves, so it forms boogers after drying and crusting. Parents can use wet cotton swabs to drag out the baby’s boogers, but the action should be gentle, and can also apply heat to the nose; if there are too many boogers, physiological seawater nasal spray can be used to wash the nose as prescribed by the doctor; 2, environmental factors: the baby’s living environment is excessively dry, which will affect the wetness of nasal secretions and produce more boogers over time. It is suggested that parents can use humidifiers and add vegetation to improve the living environment and usually give infants more water to drink; 3, disease factors: common in upper respiratory tract infections, including acute inflammation of the nasal cavity, pharynx or throat, upper respiratory tract infections can stimulate the nasal mucosa, resulting in increased nasal secretions, causing nasal congestion, which are retained in the nasal cavity and easily form boogers. It is recommended to go to the hospital for examination and can be treated with pseudoephedrine hydrochloride under the guidance of the doctor. Parents should give their infants more water and a light diet, keep the surrounding environment humid, and do not dig out the boogers violently to avoid bleeding from the nasal mucosa.