Dry eye syndrome is mainly due to changes in the quality and/or quantity of tears, which causes changes in the stability of the tear film, resulting in uncomfortable symptoms in the eye, the main symptoms of which are foreign body sensation, photophobia, and mild pain. As the causes of dry eye are various, there are both physical and environmental factors that cause it. Most of the causes are difficult to eradicate, so the main treatment plan for dry eye is symptomatic treatment, mainly active tear replenishment, which is to order eye drops that lubricate the eye. Tear quality/quantity abnormalities are mainly the following: insufficient secretion of the aqueous layer leading to a decrease in tear film water (the most common cause of dry eye), insufficient secretion of the oil layer leading to rapid evaporation of tears, insufficient secretion of the mucin layer leading to the inability of the tear film to be distributed on the surface of the eye for a long time, and a shortened tear film rupture time. Because most of the causes of dry eye cannot be completely treated, it needs to be treated by insisting on eye drops. Various types of artificial tear drops are currently formulated to simulate the composition of human tears. There is no best eye drop of this type, only the right one for you. Commonly used medications include: sodium vitrate, polyethylene glycol, recombinant human fibroblast growth factor, sodium methylcellulose eye drops, etc. In addition to eye drops, attention should also be paid to removing as many triggers as possible that affect the occurrence of dry eye, such as prolonged eye use, dry environment and lid gland dysfunction. To sum up, dry eye needs to be treated on a case-by-case basis, and this needs to be evaluated by a professional doctor, because only what suits you is the best, and there is no such panacea, or one medicine for everything.