Itchy corners of the eyes, and the more you rub them, the more itchy they become. Consider allergies, allergic conjunctivitis due to pollen, dust or grass seeds, or special foods or gases. Usually it will be on the surface of the eye, due to the stimulation of the allergen to form an allergic reaction. If you rub your eyes hard, the allergic reaction will be aggravated, the eye barrier will be destroyed more obviously, and the phenomenon of itching will arise the more you rub. It is necessary to avoid rubbing the eyes and to use topical anti-allergy medication as well as oral anti-allergy medication. Since this type of allergy is more common during the seasonal rotation, especially in spring and autumn, and is often accompanied by allergic rhinitis, the general treatment is to treat the eyes and nose together, with topical anti-allergy drops for the eyes and anti-allergy sprays for the nose, and systemic anti-allergy treatment with oral loratadine or cetirizine.