Nasal dry scabs picking off blood may be environmental factors, dry rhinitis and other reasons, can be under the guidance of the doctor drops of saline, the use of oily nasal drops and other drugs for treatment. 1. Environmental factors: due to the seasonal change or seasonal change, resulting in the mucous membrane in the nasal cavity environment is relatively dry, may be accompanied by capillary rupture of the phenomenon of scabs. It can be relieved by applying saline drops in the nasal cavity. 2. Dry rhinitis: a chronic inflammation of the nasal mucosa, which can lead to a decrease in nasal secretion, nasal mucosal dryness, congestion, crusting and other symptoms. You can use oily nasal drops such as compound menthol nasal drops, cod liver oil nasal drops and other drops into the nasal cavity for treatment. It is recommended that patients protect the nasal cavity in their daily life, prohibit frequent or vigorous nose picking, and if uncomfortable symptoms occur, they should go to the hospital in time to see a doctor to clarify the cause of the disease and standardize the use of medication and treatment.