Dry and itchy eyes may be caused by prolonged staying up late, dry eye syndrome and allergic conjunctivitis, etc. It can be treated by improving sleeping habits, using artificial tears and anti-allergic eye drops. 1. Long-term staying up late: patients have the habit of staying up late for a long time, excessive use of eyes will lead to dry and itchy eyes, it is recommended that patients improve their sleeping habits, so that the eyes get enough rest. 2. Dry eye: dry eye is usually associated with lack of tear secretion leading to lack of tears, abnormal tear quality, etc. The instability of the tear film on the surface of the eye can cause dry and itchy eyes, patients can choose to use artificial tears, such as sodium vitrate eye drops, etc., to alleviate dry and itchy symptoms, and at the same time, we should actively search for and remove the causes of dry eyes. 3. Allergic conjunctivitis: When patients are exposed to allergens, allergic conjunctivitis may be triggered, with symptoms such as dry and itchy eyes and photophobia, patients can choose anti-allergic eye drops for treatment, such as olopatadine hydrochloride eye drops, etc., and at the same time avoid contact with allergens. When patients have symptoms of dry and itchy eyes, it is recommended to go to the hospital in time for examination and diagnosis, and under the guidance of the doctor for treatment and medication, and do not take medication without authorization, so as to avoid the emergence of adverse symptoms.