Tearing of the eyes accompanied by increased mucous discharge should be preceded by an examination of the lacrimal duct flush, which is generally considered to be probably chronic dacryocystitis. This disease is mostly a chronic infection of bacteria that tends to form mucous cysts in the lacrimal sac, and patients do not experience significant pain, itching, or other uncomfortable symptoms. However, due to the long duration of the disease, treatment is difficult, flushing results can determine the site of lacrimal obstruction, as well as if there is mucopurulent discharge can confirm the diagnosis, you can first use the lacrimal area placement of surgical treatment, but some patients may not recover well, the effect is not obvious, you need to use the nasal lacrimal sac anastomosis, the surgery is relatively complex, the need for relevant ophthalmology professional surgery level is relatively high physician to complete. In addition, some patients who are examined can undergo lacrimal sac removal if they have atrophy of the lacrimal sac, but they may still have tearing after the surgery.