Nose crusts are actually acute and chronic rhinitis, where nasal secretions evaporate and form crusts, which are often called boogers, but the crusts may be flaky. You can use saline, mainly physiological sea salt water, to spray the nasal cavity and rinse out these crusts. After rinsing, spray the nose with medication, such as nasal glucocorticoids, etc. Spray the nose and nasal passages. It is also necessary to treat aggressively the primary cause, such as purulent crusts, yellow crusts, which may indicate sinus inflammation. Control the sinus infection with antibiotics. If it is white or gray, it may be caused by simple rhinitis secretion, eat some Chinese medicines that clear heat and detoxify the body and aromatically open the orifices, such as nasal abyss and orifice granules, nasal abyss and Shu oral liquid and other drugs.