There are many reasons why one side of the nostril is dry without secretion, such as nasal vestibulitis, dry rhinitis, atrophic rhinitis and so on. 1. Nasal vestibulitis: often picking one side of the nostril, eating spicy and irritating food, etc., can induce bacterial infection of the nasal vestibule, thus showing the phenomenon of one side of the nostril dry without secretion, pain. 2. Dry rhinitis: dry rhinitis can also show one side of the nostril dry without secretion, usually due to the dry environment, long-term inhalation of dry air dust and so on. 3. Atrophic rhinitis: atrophy of the nasal mucosa on one side will lead to a decrease in nasal secretion, especially after suffering from hot and cold stimuli, dryness, pain, and even headache. One side of the nostril dry without secretion of many reasons, it is recommended that patients go to the hospital in a timely manner to improve the examination of a clear diagnosis, follow the doctor’s instructions to take standardized treatment, not private treatment, so as not to lead to adverse consequences.