Steamed onions and apples can not stop cough and phlegm, cough and phlegm can be under the guidance of the doctor to take some drugs, such as dextromethorphan, Pentoxyverine, Ambroxol Hydrochloride and so on. 1. apples, onions are relatively common food, does not have medicinal value, and can not stop cough phlegm, so onions steamed apples can not be used for cough phlegm treatment, do not recommend abusing the treatment, so as not to delay the condition, resulting in aggravation of the symptoms. 2. Cough and phlegm can be symptomatic application of some drugs, commonly used cough medications such as dextromethorphan, pentoxyverine; commonly used phlegm drugs such as aminobromine hydrochloride, bromohexine, and so on; and to clarify the causes of cough and phlegm, for the cause of the treatment. It is recommended to actively consult a doctor for standardized treatment, which is conducive to the recovery of the condition.