Sodium cromoglycate is commonly used in the form of eye drops, and its main ingredient is sodium cromoglycate, which is an anti-allergic drug that can prevent allergic reactions by stabilizing the mast cell membrane to prevent the release of sensitizing mediators from mast cells, so that patients with allergic conjunctivitis can use this drug. This product is mainly used for the prevention of spring allergic conjunctivitis, when used, patients may have adverse reactions such as eye stinging, conjunctival congestion, etc. People who are allergic to this product should be prohibited from using this product. In addition, patients can use ice packs to apply cold compresses to the eyelids to relieve symptoms, on this basis, follow the doctor’s instructions to take Benadryl, loratadine and other antihistamine drugs to relieve discomfort. It is recommended that patients with allergic conjunctivitis consult a doctor to assess their condition and follow the doctor’s instructions for treatment, do not take medication without authorization.