The pathway of bacterial infection in blood includes medical source of tube placement (such as deep vein tube placement), infected lesion into the blood, etc., which needs to be removed, infected lesion debridement and antibiotic treatment. 1. Medically induced catheterization: For patients with medically induced catheterization, such as deep venous catheterization and urinary catheterization, the incidence of bacterial infection in the blood is high, so it is necessary to remove the catheterization at the first time, and carry out blood culture and select sensitive antibiotic treatment. 2. Body surface infection foci into the blood: body surface infection foci such as body surface abscess, etc., its bacteria can enter the blood, resulting in systemic infection, the need for body surface debridement, and blood culture, selection of sensitive antibiotics (such as cephalosporin cefdinir, etc.) treatment. 3. Infected foci in the body into the blood: Infected foci in the body, such as cholecystitis, liver abscess, etc., the bacteria can enter into the blood to cause systemic infection, need to carry out blood cultures, select sensitive antibiotic treatment, and surgical resection of the foci if necessary. Bacterial infections in the bloodstream need to be actively treated to avoid delays in the condition.