The most effective way to cure cough is to drink steamed pear with rock sugar is not true, it has a certain role in relieving symptoms, but can not be used to treat cough. Cough patients to find the cause, treatment of primary diseases, while giving symptomatic treatment. There is no clear research to show that rock candy steamed pear can effectively relieve cough and phlegm, but the pear is rich in vitamins, minerals and fiber, rock candy is the main component of carbohydrates, rock candy steamed pear can relieve cough caused by the pharynx dry itchy, swollen and pain and other discomforts, replenishment of water and energy, so as to have a certain relief of the role of the symptoms. Cough can be seen in a variety of causes, including respiratory diseases, digestive system diseases, cardiovascular system diseases. And pears and rock sugar in edible doses does not have the role of treatment of these diseases, only a certain role in relieving symptoms. It is recommended that the cough should go to the regular hospital in time, clear cause, standardized treatment under the guidance of the doctor, do not blindly believe in the prescription, so as not to delay the treatment.