Sepsis is a clinical syndrome of physiological, pathological, and biochemical abnormalities caused by infection. It is often caused by the invasion of various pathogenic microorganisms, such as bacteria, viruses, and mycoplasma, into the blood circulation, where they grow and multiply and produce large amounts of toxins. Clinical symptoms are usually chills, high fever, nausea, vomiting, dizziness, headache, joint pain, weakness, rapid pulse, shortness of breath, abdominal pain, diarrhea, etc. Sepsis is a serious complication in patients with severe trauma, severe infection, massive burns, shock, and other clinical emergencies and critical conditions, which are aggravated by combined organ dysfunction and/or inadequate tissue perfusion as severe sepsis or septic shock, often leading to dysfunction of two or more organs, clinically defined as multi-organ dysfunction syndrome, and is the main cause of death in patients with sepsis, and early recognition is the treatment The key to successful treatment.