Iced garlic cannot be used to treat a cough, only to provide some relief. Currently there is no clear research to show that ice sugar garlic can effectively treat cough. However, garlic is rich in vitamins, minerals and fiber, and rock sugar is mainly composed of carbohydrates, rock sugar garlic can relieve cough caused by dry and itchy throat and other discomforts, to replenish water and energy, so that there is a certain role in relieving symptoms. Cough can be seen in a variety of causes, including respiratory diseases, digestive system diseases, cardiovascular system diseases. And garlic and rock candy do not have the effect of treating these diseases in edible doses. It is recommended that people with cough should go to the regular hospital in time, to clarify the cause of the disease, under the guidance of the doctor for standardized treatment, do not blindly believe in prescriptions, so as not to delay the treatment.