If a patient feels a foreign body in the eye and has itching, it is important to consider that the patient has conjunctivitis, and most likely allergic conjunctivitis. The main symptom of allergic conjunctivitis is itchy eyes, and the patient may have a foreign body sensation and in some cases, even discharge from the eyes. Allergic conjunctivitis has become more common in recent years, either because of changes in the surrounding environment or because the patient’s own immune system is relatively low. Once a patient develops allergic conjunctivitis, it is recommended that the patient take medication, which can be taken mainly in the form of topical anti-allergy eye drops. If the patient’s itchy feeling is heavy, this time you can take appropriate cold compress method, also can effectively improve the patient’s eye itchy symptoms. Therefore, when the patient’s eyes feel foreign and itchy, it is important to consider that the patient has allergic conjunctivitis and should be given symptomatic treatment.