PROBLEM TO BE SOLVED: To provide a blood purification device which enables simple and smooth setting operations for blood purification treatment or preparation therefor.SOLUTION: A blood purification device comprises: a blood purification circuit 1 that has an artery-side blood circuit 1a and a vein-side blood circuit 1b that constitute a blood circuit; a dialyzer 2 for purifying blood that extracorporeally circulates in the blood circuit; and a dialysis device main body 8. The blood purification device also comprises: identification means α, &bgr; that can identify characteristic information that includes conditions for use of the blood purification circuit 1 or the dialyzer 2 when blood purification treatment or preparation therefor is performed; reading means 13 that can read the characteristic information of the identification means α, &bgr;; and a control unit 17 that performs the blood purification treatment or preparation therefor on the basis of the conditions for use in the characteristic information that is read by the reading means 13.【課題】血液浄化治療又はその準備を行う際の設定作業を容易且つ円滑に行わせることができる血液浄化装置を提供する。【解決手段】血液回路を構成する動脈側血液回路1a及び静脈側血液回路1bを有した血液浄化用回路1と、血液回路にて体外循環する血液を浄化するためのダイアライザ2と、透析装置本体8とを具備した血液浄化装置において、血液浄化治療又はその準備を行う際の血液浄化用回路1又はダイアライザ2の使用条件を含む固有情報が識別可能な識別手段α、βと、識別手段α、βの固有情報を読み取り可能な読み取り手段13と、読み取り手段13で読み取られた固有情報の使用条件に基づき、血液浄化治療又はその準備を行わせる制御部17とを具備したものである。【選択図】図11