Eating often choke to the trachea because of the uncoordinated muscle activity in the throat, there is an organ called the uvula, when the normal swallowing just block the airway, if the muscle or the nerve governing the muscle dysfunction, there will be motor uncoordination, resulting in swallowing when the uvula can not block the airway, something, food or water will flow into the trachea and lead to choking and coughing. There are several reasons for this condition, such as muscle relaxation with age, weakness of movement, uncoordinated movement or aging, and also motor incoordination, which is a physiological phenomenon. In old age even without any disease, it is easy to choke and cough. In addition, there is cerebrovascular disease, if there is damage to the cortical brainstem bundle bilaterally, the muscle activity in the throat will be poor, which will easily cause choking and coughing.