Dry eye disease is a condition in which the tear film on the surface of the eye is abnormal in quality and quantity due to various causes, resulting in dry eyes and other discomfort symptoms. There are many symptoms of eye discomfort caused by dry eye disease, including: dry eyes, grinding pain, foreign body sensation, acidity, frequent blinking, and sticky pulling-like discharge. The causes of dry eye disease are diverse, including environmental factors and self-induced factors. The former are common: dry climate, sandy wind, sunlight exposure, unhealthy living habits, frequent late nights, lack of vegetables and fruits in the diet, eating a lot of sweets and fried foods, etc.; it should be especially reminded that in the daily life of modern people, staring at the screen for a long time in front of the computer for work and study or playing games is one of the most common causes of obvious eye dryness accompanied by a sense of fatigue. Self-factors are: people with oily skin are prone to dry eye disease, autoimmune diseases, chronic conjunctivitis, recurrent allergies, and after eye surgery. Ophthalmic examinations related to dry eye disease: slit lamp examination, fluorescein staining of the corneal surface, tear film rupture time, tear river height measurement, and also tear secretion test (Schimmer’stest) examination. If these results are consistent with the diagnosis of dry eye, the disease can be considered. Dry eye disease cannot be completely cured at present and is mainly treated with alternative, symptomatic therapies. For long-term use of eye drops of the artificial tear type, it is in principle most appropriate to choose the type without preservatives to avoid more serious damage to the ocular surface due to the preservative factor. If you want to achieve better and more obvious treatment results, you must cooperate with lifestyle improvements, such as: strengthening exercise, going to bed early, reducing the time spent on computers and cell phones, and eating more vegetables and fruits. In addition, usually do more hot compresses on both eyes, and if you have the immune disease dry eye syndrome, actively treat it at the same time, or if the lid gland dysfunction is caused by factors that block the lid gland, it can be improved by medical massage and cleaning the lid margin. In conclusion, dry eye disease is a common disease in modern society and is still difficult to cure. On the one hand, it requires long-term use of eye drops to improve symptoms, and more importantly, lifestyle changes to achieve twice the result with half the effort.