Dry eye is mainly a dry sensation of the conjunctival cornea caused by excessive tear production or evaporation, and is common in clinical outpatients in ophthalmology, where priority is usually given to eye drops, that is, artificial tear drops into the eye. The underlying cause of dry eye is abnormal tear quality or quantity, or decreased tear film stability due to abnormal tear kinetic distribution. The main clinical manifestations of dry eye syndrome are dry eyes, foreign body sensation, burning sensation, eye redness, photophobia, eye pain, transient blurred vision, eye fatigue and other discomforts. Topically applied eye drops are usually applied with artificial tears, including sodium glassate, methylcellulose, hydroxypropylmethylcellulose, polyvinyl alcohol, polyacrylic acid, etc. Or supplemented with other drugs that promote epithelial repair or improve ocular symptoms, such as recombinant bovine basic fibroblast growth factor and heptafoliate digitalis bisaccharide eye drops. It is also worth noting that patients with dry eyes who have repeated episodes of poor treatment with artificial tears should also pay attention to the presence of autoimmune diseases such as dry syndrome, the latter of which requires systemic immunomodulatory therapy. There are many causes of dry eyes, the most critical thing is to identify the cause, treat the symptoms and use eye drops reasonably under the guidance of a doctor.