There are many causes of itchy eyes, and to treat them effectively, the main thing is to find the cause first and then treat it for the cause. Sometimes there are clinical cases where it is difficult to find the specific cause and symptomatic treatment can also be administered. Commonly used methods are medications, including topical medications (eye drops/ointment), oral medications and systemic intravenous medications. The most common causes of itchy eyes are allergies, such as allergic conjunctivitis, eyelid dermatitis, etc. Adolescents also have a prevalence of khat conjunctivitis in spring. Eye itch in these diseases has characteristics: odd itchiness and a clear seasonality, with spring as the most common. Treatment is based on anti-allergy drugs. There are four main classes of drugs: antihistamines, mast cell stabilizers, hormones, and nonsteroids, all of which are formulated into finished ophthalmic solutions. The specific names of eye medications are: Emetine eye drops, sodium cromoglycate eye drops, pyrimethamine potassium eye drops, tobramycin dexamethasone eye drops, tobramycin dexamethasone eye ointment, and patanosol eye drops. After topical medication, if the condition does not resolve, systemic medication may be an option. For example, with oral anti-allergy medication. In the absence of medication, the quickest solution for relief is to apply local ice first, which can alleviate some of the symptoms, and then go to the hospital promptly. If the symptoms of itchy eyes occur only once in a while or very rarely, you can follow the above ways to deal with them. If the symptoms of itchy eyes occur frequently, an allergen test is needed to look for allergic factors, and then targeted prevention and treatment. The usual degree of itchy eyes is commonly associated with chronic conjunctivitis and dry eyes. Chronic conjunctivitis, although also called “inflammation”, is not caused by bacterial infection, but also by various physical and chemical factors, excessive eye use, excessive computer use, improper eye wear, and other causes. Therefore, it is important to change bad habits as much as possible to remove or reduce the causative factors. To sum up, the main thing is to find the cause of itchy eyes and treat it in a targeted manner in order to be effective.