Eye droppings are considered to be caused by dry eye, allergic conjunctivitis and dacryocystitis. 1. Dry eye disease: If the patient suffers from dry eye disease, due to insufficient tear secretion by lacrimal glands and reduced cleansing ability, the eye droppings may appear as white and pulling. 2. Allergic conjunctivitis: If patients suffer from allergic conjunctivitis due to contact with allergens, it can be accompanied by vasodilatation and the appearance of eye droppings, and in severe cases, it can be tearing, pain, foreign body sensation or burning sensation. 3. Dacryocystitis: Inflammation caused by the obstruction of the lacrimal sac, localized pus accumulation to a certain extent, it may lead to the phenomenon of patients’ eye booger pulling, and there are symptoms such as tear overflow, redness, swelling and pain in the area of the lacrimal sac. When the patient has the phenomenon of eye booger pulling, it is recommended to go to the ophthalmology department of the hospital in time for examination and standardized treatment according to the cause of the disease.