There is no concept of common cough, mycoplasma infected cough and other causes of cough are symptoms of respiratory diseases, the difference lies in the different causes of cough, the nature of the cough is different, the treatment is different. 1. Different pathogens: mycoplasma infected cough is caused by mycoplasma infection, while the cough can be seen in a variety of reasons, in addition to microbial infections, lung tumors, cough variant asthma, gastroesophageal reflux, upper airway cough syndrome and other causes can be caused. 2. The nature of cough: mycoplasma infection causes cough is mostly episodic dry cough, which is heavier at night, and may also produce purulent sputum; cough can be dry or with sputum. 3. Treatment: Mycoplasma infection cough treatment is based on macrolide antibiotics, such as azithromycin, roxithromycin, etc., can also use quinolone antibiotics, such as levofloxacin and other drugs. Cough needs to be treated for the cause of the disease, and if necessary, it should be treated by relieving cough and resolving sputum. Clinical manifestations can not completely differentiate between mycoplasma infection cough and common cough, but also need to actively seek medical treatment, through sputum culture, mycoplasma antibody test can be clearly diagnosed.