PURPOSE: To provide the artificial dialysis device which can surely execute rinsing of a blood circuit and a priming treatment with simple constitution by setting an operation for executing the priming treatment of the blood circuit and dialyzer in such a manner that a blood pump is automatically stopped after the prescribed amt. of a priming liquid is passed under a preset condition.

CONSTITUTION: This artificial dialysis device is provided with the blood pump 10 and is so constituted as to execute the priming treatment of the blood circuit 18 including the dialyzer. The device also provided with a pump controller setter 28 which automatically controls the operation of the blood pump 10 in correspondence to the set amt. of the priming liquid by setting the supply rate of the priming liquid suitable for executing the priming treatment of the blood circuit 18.