A blood purification apparatus is provided that allows setting work at the time of blood purification treatment or preparation for the treatment to be easily and smoothly performed. The blood purification apparatus includes: a circuit (1) for blood purification having an arterial blood circuit (1a) and a venous blood circuit (1b) that constitute a blood circuit； a dialyzer (2) for purifying the blood extracorporeally circulated by the blood circuit； and a dialysis device main body (8), wherein the blood purification apparatus includes an identification means (±, ²) that allows specific information to be identified, the specific information including an operating condition of the circuit (1) for blood purification or the dialyzer (2) at the time of blood purification treatment or preparation for the treatment, a reading means (13) by which the specific information of the identification means (±, ²) is readable, and a control unit (17) that performs blood purification treatment or preparation for the treatment based on the operating condition in the specific information read by the reading means (13).
