Positive for Chlamydia pneumoniae is mostly suggestive of chlamydial infection, which is widely found in nature and is an atypical conditional pathogenic bacterium. Chlamydia can cause acute respiratory infections, mostly in pneumonia, but also in pharyngitis and bronchitis. Symptoms are usually insidious, there can be fever, but mostly mild to moderate fever, and general malaise, cough, headache, etc. Once diagnosed, active treatment is required. Currently, macrolides such as azithromycin and roxithromycin are preferred and are very effective. Secondly, quinolones are also effective, but sometimes the course of treatment is relatively long, so it is necessary to follow medical advice and adhere to the full course of treatment. Patients need to keep warm, drink warm water, avoid catching cold and flu, and supplement vitamins and proteins. In addition, pay attention to rest and strengthen their immune system to promote the healing of the disease.