The treatment cost of CRRT includes the following parts: 1) the cost of the line filter; 2) the cost of the replacement fluid, which is directly proportional to the amount of replacement; 3) the cost of continuous blood evolution, CRRT may need to last for about two days; 4) the different configurations of the filter machine, the costs incurred are also different accordingly; 5) depending on the category to which the patient belongs to, the cost of the treatment is also different. Depending on the health insurance policy of individual regions, CRRT treatment may fall within the scope of reimbursement by health insurance.