The diagnosis of septicemia can be determined by symptoms as well as examination. 1. Symptoms: the patient has an infectious manifestation, at the same time, the body temperature is more than 38 degrees or less than 36 degrees, there can be an increase in heart rate more than 90 beats per minute, rapid respiration is more than 30 beats per minute, or the patient has obvious edema, hyperglycemia is more than 7.7 mmol/L, but there is no history of diabetes mellitus. 2. Examination: Laboratory tests can be combined with indicators, such as the white blood cell count can be significantly increased, greater than 12 × 10⁹ / L, or the white blood cell count is less than 4 × 10⁹ / L, or immature granulocytes are increased. Plasma C-reactive protein is elevated, while the patient is likely to have changes in blood pressure, all of which contribute to the diagnosis of sepsis. Some patients may also have hyperlactatemia greater than 3 mmol/L. If organ dysfunction is present, the oxygenation index is less than 300, the patient may have acute oliguria of less than 0.5 ml per kilogram of body weight per hour, an increase in creatinine, and possibly hyperbilirubinemia, based on which the diagnosis of sepsis can be confirmed. If the patient develops infected lesions suspected of sepsis, it is recommended to consult a doctor in time and complete all the examinations under the guidance of the doctor.