Foreign body sensation caused by conjunctivitis is usually due to inflammatory stimulation, the formation of congestion, edema or follicle formation in the bulbar conjunctiva, or small stones before conjunctivitis, and after inflammatory stimulation, the stones protrude more obviously, thus aggravating the foreign body abrasion. To eliminate foreign body sensation is mainly to eliminate the inflammation, generally use antibiotic eye drops or with nourishing eye drops to protect the cornea, topical eye drops can significantly improve the symptoms. At the same time, local cold compresses can be applied to reduce the symptoms of conjunctival congestion and edema to eliminate foreign body sensation. If there are obvious conjunctival stones, surface anesthesia is needed to remove the stones in the ophthalmology department, and if there is irritation of the impingement, it should be removed as well.