Symptoms of chest tightness and shortness of breath during the recovery period of pneumonia may be related to the fact that pneumonia has not been cured, severe pneumonia affects the function of ventilation, combined with pleurisy, pleural effusion or heart disease. 1. Severe pneumonia is not cured: when severe pneumonia enters the recovery period and the inflammation is not cured, if it leads to ventilation and gas exchange dysfunction, symptoms of chest tightness and shortness of breath may appear. 2. Combined with pleurisy or pleural effusion: after pneumonia patient enters the recovery period after treatment, if combined with pleurisy, causing pleural effusion, the fluid in the chest cavity increases and compresses the lung tissue, chest tightness, shortness of breath and other symptoms may occur. 3. Combined heart disease: patients suffering from cardiac insufficiency, atrial fibrillation, coronary artery disease and other heart diseases, after getting pneumonia, in the case of hypoxia caused by inflammation, it may aggravate the heart load. Recovering patients may also have symptoms such as chest tightness, shortness of breath and panic. Pneumonia recovery patients have chest tightness, shortness of breath and other symptoms may also be other reasons, should be timely to the hospital examination, to determine the cause of the disease, for the cause of reasonable treatment.