Empty cough dry cough may be caused by environmental factors, acute bronchitis, acute pharyngolaryngitis, pleurisy, pneumonia and other factors. 1. Environmental factors: such as poor environment, inhaled dust, smoke and other gases, can cause dry cough empty cough symptoms. 2. Acute bronchitis: acute bronchitis in the early stage will appear empty cough dry cough, with the aggravation of the lesion, may cough up a small amount of sputum, and coughing symptoms will gradually aggravate, not timely treatment can be transformed into chronic bronchitis. 3. Acute pharyngolaryngitis: the onset of more acute, will cause irritation of the throat, can lead to empty cough dry cough, may also be accompanied by dry throat, sore throat, throat itching and other symptoms. 4. Pleurisy: when suffering from pleurisy, it can also cause the symptoms of dry cough, and also accompanied by low fever and other symptoms. 5. Mycoplasma pneumonia: mainly related to mycoplasma infection, there will be dry cough, may also be accompanied by fever, fatigue. If the symptoms of dry cough exist for a long time and continue to worsen, it is recommended to consult a doctor for examination, clarification of the cause of the disease and timely treatment.