The most common types of pneumonia are the following: 1. Bacterial pneumonia, which is the most common type of pneumonia, is caused by bacterial invasion. The most common type is Streptococcus pneumoniae pneumonia, commonly known as lobar pneumonia, in which the patient usually has a fever and generalized chills. 2. Mycoplasma pneumoniae pneumonia, which is also a relatively common type of pneumonia. 3. Viral pneumonia and fungal pneumonia, which are not very common in clinical practice. Patients suffering from pneumonia need to promptly check the sputum culture to clarify the infected pathogens, and then select appropriate and sensitive antibiotics for treatment according to the test results.