Dacryoadenitis is a disease of the lacrimal secretion system, which can be divided into “acute dacryoadenitis” and “chronic dacryoadenitis”. ”Acute lacrimal gland infection can be caused by bacterial and viral infections, mostly in one eye, and often occurs together with measles and mumps. The symptoms may include localized swelling and pain over the orbit, pressure on the lump, pressure pain, “S”-shaped ptosis, enlarged lymph in front of the ear, etc. It can be accompanied by irritating inflammatory manifestations on the surface of the eye, such as conjunctival congestion, edema, increased mucous secretions, etc. If prolonged, it can become subacute or chronic, or it can form abscesses. ”Chronic dacryoadenitis is mostly associated with an immune response, but can also be caused by trachoma or tuberculosis, most of the time in both eyes. It is often characterized by painless enlargement of the lacrimal gland, a lump that can be found on the orbital trauma, and may be accompanied by ptosis, which in more severe cases can compress the eye and affect the rotation of the eye, causing diplopia. Overall, the diagnosis of lacrimal gland disease is not difficult, but treatment needs to be prompt and early to avoid prolongation of the disease and the transformation of the acute condition into a chronic one, and the use of medication for the cause and related systemic symptoms can lead to a more stable outcome.