Chronic dacryocystitis is a chronic inflammation of the lacrimal system, mostly secondary to narrowing or obstruction of the nasolacrimal ducts, resulting in retention of tears within the lacrimal sac and associated bacterial infection. The main symptoms are tear overflow and pus overflow from the tear dots. Conjunctival congestion, eczema, redness and swelling of the lower lid skin can be seen, and mucus or mucopurulent secretions flow from the tear dots when the tear sac area is squeezed with a finger. When the lacrimal duct is flushed, the flushing fluid returns from the upper and lower lacrimal dots, along with mucopurulent discharge. It is mostly seen in middle-aged and elderly women. This disease seriously affects the life of patients treatment, not only brings patients life troubles, but also due to the presence of chronic lacrimal sacculitis, after the implementation of internal eye surgery can also cause serious complications such as endophthalmitis, and even vision loss. For this disease, antibiotic eye medications can be ordered, but they only temporarily alleviate the symptoms and cannot completely cure it. Alternatively, surgical treatment can be chosen, with common procedures being lacrimal sac removal and nasal lacrimal sac anastomosis. For older patients, lacrimal sac removal is often chosen because it is a simple and less invasive procedure, and older patients can tolerate the procedure. Nasal lacrimal sac anastomosis is a procedure in which the lacrimal sac is anastomosed to the nasal mucosa through a bony hole, allowing tears to flow directly into the middle nasal passage through the anastomosis. This procedure is a more thorough treatment but is relatively more invasive. At present, there is another better treatment method, namely artificial nasolacrimal duct anastomosis, that is, the application of a probe to probe the tear duct through and implant an artificial nasolacrimal duct to lift the blockage of the tear duct, assist in flushing the tear duct, anti-inflammatory and other treatments to achieve the purpose of curing chronic dacryocystitis. However, the procedure has the possibility of reobstruction of the nasolacrimal duct, but the procedure is simple, can be completed on an outpatient basis, and is less painful, so it is not a better choice.