PROBLEM TO BE SOLVED: To provide a blood purification circuit panel capable of constituting a blood purification circuit by preparing a panel in which a tube and the like are previously built in, and easily and reliably fitting a dialyzer to the panel.SOLUTION: A blood purification circuit panel 10 comprises a panel 20, and a dialyzer 30 that is fixed to the panel 20 and having a dialysate distribution tube part 35 protruding from a lateral surface. The panel 20 includes an attachment piece 23A that is formed protruding from a part of the periphery and has a notch 24A. The notch 24A includes a narrowed portion 25A formed by narrowing the width of the notch 24A, at an opening side. The dialyzer 30 is so fixed to the panel 20 that the distribution tube part 35 runs on to the narrowed portion 25A of the notch 24A of the attachment piece 23A and fitted in the notch 24A.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2016,JPO&INPIT