Itchy eyes and nose are mostly considered to be caused by allergic conjunctivitis and allergic rhinitis due to the immune response of the body. When the conjunctiva contact with external allergens such as plant pollen, animal fur and other substances, the occurrence of hypersensitivity immune response, allergic conjunctivitis can occur, manifested in the eyes itchy, but also can cause conjunctival congestion, eyelid edema, eye foreign body sensation and mucous secretion increase and other manifestations. Avoid rubbing the eyes at this time. Organism exposure to allergens at the same time can also lead to inflammation of the nasal mucosa, inflammatory mediator release, resulting in nasal itching, sneezing, nasal discharge and other manifestations. For people with itchy eyes and itchy nose, it is recommended to consult a doctor in time to clarify the cause of the disease and follow the doctor’s instructions for treatment.