The cost of chemotherapy for middle-aged and old-aged leukemia patients usually ranges from a few thousand dollars to tens of thousands of dollars, which varies greatly according to the different chemotherapy drugs needed, the different complications and the different adverse reactions. 1. The cost of chemotherapy for middle-aged and old-aged leukemia patients varies according to the type of leukemia, chemotherapy regimen, chemotherapy drug dosage form and so on, and there is no specific standard. If the first-line program, the second-line program, the composition of the drug is different, and the dosage form of the selected drug is different, its price will be very different. Drugs include cytarabine, decitabine and so on. 2. If middle-aged or elderly leukemia patients have adverse reactions during chemotherapy, such as vomiting, they should be treated with antiemetic drugs (tropansetron), and if bone marrow suppression occurs, they need to be transfused with blood or platelets, etc., which will increase the cost accordingly. 3. Since middle-aged and old-aged leukemia patients have poorer physical condition than young people, many complications such as infections are likely to occur during chemotherapy, and the cost will be increased accordingly according to the specific situation. Therefore, the cost of chemotherapy for middle-aged and old-aged leukemia patients is uncertain, depending on the specific circumstances of the corresponding drugs given, the approximate cost of a few thousand dollars to tens of thousands of dollars. Specific treatment should be carried out under the guidance of physicians.