The difference between a mycoplasma-infected cough and a common cough is, firstly, that the pathogens are different. Mycoplasma is a pathogenic microorganism between bacteria and viruses, whereas a common cough is usually caused by viruses and bacteria. Secondly, there are certain differences in the nature, duration and treatment of cough: 1. Nature of cough: cough caused by mycoplasma infection is mainly an irritating dry cough with very little sputum, which is difficult to discharge, while most common coughs are accompanied by sputum production, which is easier to cough up; 2. Duration: dry cough caused by mycoplasma infection lasts longer and may last 2-4 weeks, while Ordinary cough will generally gradually reduce in about 1 week; 3. Treatment: cough caused by mycoplasma infection is mostly treated with macrolide antibiotics, such as azithromycin, erythromycin, roxithromycin, etc., and can also be treated with drugs such as levofloxacin, while ordinary cough, generally using cough medicine can help control the symptoms.