Dry and crusty nostrils with boogers inside may be caused by dry rhinitis, deviated nasal septum, nasal vestibulitis and other diseases. 1. Dry rhinitis: it may cause symptoms such as increased nasal secretion and dryness of the nasal cavity, especially after the patient picks and digs the nasal cavity, which increases the exudate and secretion, thus causing dry and crusted nostrils and boogers. 2. Nasal septum deviation: some patients are caused by nasal septum deviation, because nasal septum deviation easily leads to narrowing of the nasal cavity, causing obstruction of nasal drainage, which will lead to nasal dryness, nasal secretion stagnation and so on. 3. Nasal vestibulitis: diffuse inflammation of the nasal vestibular skin nasal vestibular skin can have diffuse redness and swelling, or chaffing and superficial vesicles, or dry crust, nasal hairs with sticky pus crusts, sometimes mixed with boogers. Appear inside the nostrils dry crust with boogers, it is recommended that the patient timely medical examination, clear causes for targeted treatment.