Nasal itching may be caused by foreign body stimulation, allergic rhinitis, acute rhinitis and other factors, it is recommended to consult a doctor in time to clarify the cause of the disease. 1. Foreign body stimulation: dust, pollen, animal hair, etc. into the nasal cavity, may stimulate the nasal sensory nerves, triggering a transient nasal itch. 2. Allergic rhinitis: allergens include pollen, dust mites, house dust, fungi, animal dander, etc. Due to the hyperactive immune system in the body, local inflammatory reaction is triggered and the disease is triggered, and the patient may have itchy nose, nasal mucus, nasal congestion, sneezing, olfactory impairment and other uncomfortable symptoms. 3. Acute rhinitis: can be caused by viral and bacterial infections and adverse physical and chemical factors, some patients may have nasal itching in the early stage of infection. Nasal itching may also be caused by nasal foreign body, persistent unrelieved or accompanied by other discomforts, should actively consult a doctor for systematic examination and clear diagnosis.