The difference between septic and non-septic lies in whether the primary site is heavily infected, which can be manifested as a septic lesion. 1. Suppurative originates from local inflammatory reaction: including leukocytes, platelets, macrophages and other immune cells and immune factors phagocytosis, kill a large number of pathogens such as bacteria, viruses, etc. In the process of producing a large number of tissue fluid exudation and inflammatory cells proliferation results, often suggesting that there is a serious clinical infection. For example, purulent tonsillitis, purulent cerebrospinal meningitis. 2. Non-suppurative: compared with the former light, and involves a wide range of may be the inflammation of the early, middle reaction form, or is a physiological reaction may also be other pathological reaction. For example, cellulitis of soft tissue. Whether the infection is purulent or non-purulent, it is necessary to consult a doctor in a timely manner to clarify the diagnosis and standardize the treatment.