A blood purification apparatus is provided in which parameters related to ultrafiltration can be changed assuredly and smoothly at the restart of blood purification treatment suspended with the release of the patient from a blood circuit during the blood purification treatment. A blood purification apparatus in which the blood purification treatment that is suspended with the release of the patient from a blood circuit during the blood purification treatment is restartable includes a touch panel (M) capable of displaying, simultaneously on one particular screen, a plurality of variable amounts related to the patients body weight that changes with the suspension and restart of the blood purification treatment.
