Conjunctival xerosis is a dryness of the conjunctiva that occurs primarily due to lesions in the conjunctival tissue itself and has a variety of causes. Under normal conditions, the lacrimal glands and conjunctival cuvettes secrete tears that keep the conjunctiva moist on a regular basis, but once these moisturizing functions are disrupted, conjunctival dryness occurs. Conjunctival dryness can be divided into epithelial conjunctival dryness and substantive conjunctival dryness. Clinically, cod liver oil drops are applied, along with antibiotic solutions and ointments to prevent and treat secondary infections, corneal ulcers and corneal softening. Measures to prevent conjunctival dry spots are as follows: I. Local care Apply cod liver oil eye drops, along with antibiotic solution and eye ointment to prevent and treat secondary infections, corneal ulcers and corneal softening, and atropine drops to dilate the pupil and antibiotic eye ointment. Second, systemic care is mainly to improve the patient’s nutritional status and prevent secondary infections. Eating vitamin A-rich food, such as milk, eggs, pig liver containing carotenoid vegetables; oral cod liver oil, such as patients with dyspepsia or gastrointestinal disorders can be injected intramuscularly vitamin A or AD, once a day; systemic comorbidities should be taken together with the assistance of pediatrics or internal medicine active treatment measures. There is no effective treatment, mainly symptomatic treatment, in order to reduce pain can be frequent drops of saline, artificial tears or antibiotic ointment; or closed with electric branding small tear dots to reduce the outflow of tears; some people perform parotid duct transplantation to improve the symptoms have certain benefits, but when dining due to excessive secretion of the parotid gland, often make patients more than tears, and in recent years, the use of hydrophilic soft corneal contact lens, but the effect is not yet The results are not yet definitive. For dry eyes due to incomplete lid closure, blepharoplasty is possible. Once the lid closure is corrected, the conjunctiva can be restored to some extent.