Pneumonia is relatively common in clinical settings and is classified as a lower respiratory tract infectious disease. Patients with ordinary pneumonia can be further divided into mild and severe types. If the condition of ordinary pneumonia is mild, the patient may not experience chest pain. However, if the ordinary pneumonia infection is severe, it can cause chest pain, and may also be accompanied by fever, cough, phlegm, shortness of breath, chest tightness, and difficulty breathing among other clinical symptoms. Therefore, the diagnosis of ordinary pneumonia must take into account the patient's medical history and related auxiliary examinations to make a definitive diagnosis.