Urinary sepsis is mainly due to severe urinary tract infection retrograde to the upper urinary tract, resulting in localized infection of the renal pelvis and kidneys, due to a large number of bacteria and toxins into the blood, the human body will have a significant fever, high fever accompanied by chills, and significant lumbar pain, and if serious, will cause circulatory failure, early tachycardia, irritability, and in the late stage, the blood pressure will drop due to infectious shock and other pre-shock manifestations, In the late stage, the blood pressure will drop due to infectious shock, and pre-shock manifestations such as pale skin and mucous membranes will appear. In this case, the patient should promptly take blood test and blood culture, and immediately apply antibiotics to save the patient, which usually can be effective recovery in time. If not treated in a timely manner, the human body triggers infectious shock, once the progress will cause multi-organ failure, or even life-threatening.