Symptoms of Mycoplasma pneumonia in adults are mainly fatigue, myalgia, fever, cough, etc. Some patients also have maculopapular rash and erythema multiforme. Mycoplasma pneumonia in adults is mainly caused by Mycoplasma pneumoniae infection, which is contagious. Patients usually have clinical symptoms 1~3 weeks after infection with Mycoplasma, such as fatigue and myalgia, which will be relieved after 2~3 days. The patient will also have moderate fever, severe cough, and some patients will cough with purulent sputum. In addition, some patients may have symptoms such as maculopapular rash, erythema multiforme, sore throat, ear pain, and chest pain. If the patient’s condition worsens, symptoms such as enlarged lymph nodes in the neck, pharyngeal and periosteal congestion may also occur. When adults have symptoms such as fatigue, myalgia, fever, etc., it is mostly considered to be caused by mycoplasma pneumonia. Patients should go to the hospital in time, under the guidance of the doctor for regular treatment, to avoid aggravating the condition.