Elderly people with tearing eyes can be caused by diseases of the tear duct, conjunctival relaxation, eye inflammation, dry eye and other diseases. 1. Lacrimal disease: Narrowing or blockage of the lacrimal duct is a common cause of tearing eyes. When the lacrimal duct is narrowed or blocked due to age and disease factors, it can lead to abnormal entry of tears into the nasolacrimal duct, which in turn leads to overflow of tears. 2. Conjunctival relaxation: due to age factor, the elderly may have conjunctival relaxation, and when slightly stimulated by the outside world, they can not drain the tears well into the tear duct, so they are more likely to have tearing performance. 3. Ocular inflammation: If ocular inflammatory diseases such as dacryocystitis, keratitis, conjunctivitis, etc. occur, the eye can be stimulated, and there is a reflex increase in tears. 4. Dry eye: when dry eye occurs, the tear film is unstable, the eyes are prone to dryness, photophobia, foreign body sensation and other manifestations, there can be a reactive aqueous tear secretion excess. When the eyes of the elderly old tears, should be timely medical consultation, under the guidance of specialists to actively carry out appropriate treatment, will help early relief of discomfort.