Nasolacrimal duct cyst is a congenital malformation, patients usually have it at birth, clinically it may manifest itself as a love of tears and difficulty in breathing, difficulty in breathing mainly refers to the difficulty in breathing caused by blocking the nasal cavity. The general treatment for this disease, if the child is just born, you can give the child to do the tear duct massage, the younger the child massage effect may be better, massage must keep the hands clean, clean, to avoid inducing infection. Other treatment is surgery, surgery is the main treatment option, generally you can choose general anesthesia nasal endoscopy with a suction cutter or with a laryngeal knife, along the bottom of the cyst to make a transverse incision, the cyst fluid inside the cyst are sucked out, remove the surrounding cyst wall, so that the drainage mouth is fully expanded, the tear secretion flow out is no longer blocked, and very smooth.