A hemodialyzer 1, a blood circuit 2, a blood pump 3 provided on the upstream side of the hemodialyzer 1 (an artery side blood circuit 21), a dialysis fluid supply line 4, and a draining line 6 are included and a dialysis condition calculating and displaying means 9 configured to, when a clearance of the hemodialyzer to be used is set and a blood flow rate is set, calculate and display a dialyzing fluid flow rate corresponding to the set clearance and the set blood flow rate is provided. The hemodialysis apparatus is controlled by a control apparatus 8, and the dialysis condition calculating and displaying means 9 is electrically connected to the control apparatus 8. The dialysis condition calculating and displaying means 9 may be integrated in the control apparatus 8.[Problem]A hemodialysis apparatus which can calculate and display dialysis conditions with a simple operation while reducing costs is provided.