Lacrimal duct placement surgery in different conditions, as well as different surgical methods, the time to remove the catheter is different, for example, for simple tear duct stenosis or blockage of the lacrimal duct probing catheterization surgery, such placement of the catheter can be removed in about one month in general. If it is a lacrimal sac inflammation, nasal lacrimal sac anastomosis, implanted in the operation of the catheter, generally need to be removed in the postoperative period of three months or so, can play a very good maintenance of the smooth state of the tear duct, and in the process of the entire tear duct, pay attention to the regular tear duct flushing inspection, try to keep the tear duct smooth state, can only be removed after the removal of the lacrimal tube can be maintained after the tear duct smoothness. Therefore, if there is a tear duct disease in the eyes, it is necessary to go to the regular hospital for diagnosis and treatment, only in this way can we get the best results.