Pneumonia dry cough is still more bad, especially frequent and violent dry cough will lead to related complications, if there are cardiovascular and cerebrovascular diseases frequent dry cough easily lead to blood pressure fluctuations, aggravate cerebral infarction, induced myocardial ischemia, and even lead to myocardial infarction. If there is a lung blister, especially chronic obstructive pulmonary disease combined with huge lung blisters, frequent dry cough can easily lead to lung blister rupture to form pneumothorax, resulting in sudden dyspnea. Patients who have just had surgery, frequent and violent dry cough can easily lead to wound pain, the wound is not easy to heal and produce related complications, some pregnant women in the stage of labor and delivery frequent dry cough can easily induce preterm labor. Therefore, a dry cough without sputum in pneumonia has many disadvantages, in addition to the lung disease itself, it is easy to lead to the formation of related complications, and must be given treatment as soon as possible to alleviate the symptoms of dry cough.