Normal healthy people lying down to sleep and will not be bad for the lungs, but if you suffer from pneumonia and other lung diseases, lying down to sleep may aggravate the cough, cough phlegm and other manifestations. In the case of normal health, sleeping posture generally does not have much impact on the lungs, lying down, sitting, lying down and other sleeping positions will not cause damage to the lungs, so for healthy people do not have to worry about the impact on the lungs and deliberately choose to sleep, choose a comfortable sleeping position. But for the case of inflammation of the lungs, pneumonia inflammatory exudate more, will affect the ventilation function of the lungs, in lying down will lead to phlegm in the local accumulation, may aggravate the patient cough, coughing symptoms, and even serious cases of asthma. Less severe symptoms, it is recommended to adjust the sleeping position from time to time, you can sleep on the side, lying on the back to switch back and forth, should not be maintained for a long time in a sleeping position, the more serious asthma, you can choose to half-lying or sitting position to sleep. If there are uncomfortable symptoms, it is recommended to consult a professional doctor in time.