Although corneal foreign body injuries are relatively easy to examine and treat, if they are not handled properly, they may prolong the treatment time in mild cases, or lead to infection and affect vision in severe cases. Clinically, corneal foreign body removal surgery is generally adopted for treatment: 1. Use saline to rinse a lot, or use cotton balls to gently wipe away; 2. If it can not be removed, after local drops of surface anesthetics for 2-3 times, the lid opener props open the upper and lower lids, and the foreign body is removed with a sterilized foreign body needle or syringe needle. If the foreign body is small and deep, it can be removed with a magnifying glass or under a slit lamp. If rust is present, it should also be removed to avoid irritation of the tissues. 3. Check whether the foreign body is completely removed and whether there is any residual foreign body, put anti-inflammatory eye drops and cover the eye pads, and inject antibiotics under the conjunctiva if necessary, and review on the next day. Only if there is no infection, residual foreign body or rust will it be considered successfully culled. If there is severe eye pain, photophobia, tearing and other signs of more severe corneal irritation, a timely review should be performed.