Itchy eyes rubbing out blisters, mostly considered to be allergic conjunctivitis caused by reactive bulbar conjunctival edema. Allergic conjunctivitis is a common clinical anaphylactic disease, occurring in allergic patients, children and adolescents, especially in the spring and fall incidence is higher, there are a lot of allergens, such as airborne dust, cosmetics, fur, cotton lint and so on can lead to. The main clinical manifestation is itchy eyes, accompanied by filamentous secretion. Examination of the patient may reveal congestion of the bulbar conjunctiva, accompanied by bulbar conjunctival edema. Treatment should remove the allergens, if necessary, can do desensitization treatment, topical use of antihistamine, anti-mast cell stabilizers, such as sodium cromoglycate eye drops, palotan eye drops, with non-steroidal anti-inflammatory drugs, such as pranoprofen eye drops. If the patient’s condition is severe, topical glucocorticoid drops are used if necessary.