Dry eyes are usually clinically considered to be caused by dry eye syndrome. Dry eye syndrome is a general term for a variety of diseases characterized by abnormalities in the quality and quantity of tears or abnormalities in the kinetics of the tear film due to any cause, and is accompanied by ocular discomfort, resulting in ocular surface tissue lesions. There are many causes of dry eye, the most common is caused by environmental factors, such as people who often work on computers or play with cell phones, in addition to prolonged stay in air-conditioned rooms, polluted environments, and prolonged late nights, can lead to the aggravation of dry eye. Dry eye can also be caused by dysfunction of the lid gland, which is common among people of all ages under the influence of modern lifestyles. In addition, as we age, factors such as atrophy of the lid glands, degeneration of the tear film function, or systemic diseases such as dry syndrome, or after eye surgery, long-term chronic eye diseases, long-term use of eye drops, etc. can cause dry eyes. Therefore, if your eyes are dry and sore, it is best to go to the hospital ophthalmology department for timely consultation. If you are diagnosed with dry eye, you should first eliminate the causes, try to avoid prolonged use of computers, less exposure to air conditioning, or smoke and dust environment and other triggers of dry eye. Localized eye treatment with artificial tear drops can be considered. In patients with lid gland dysfunction, lid gland massage can also be performed. For severe dry eye, treatment with tear punctal plugs, wet room lenses, and autologous free submandibular gland transplantation can be considered.