BLOOD PURIFICATION SYSTEM

A blood purification system is provided that is capable of effectively utilizing accumulated histories stored during blood purification treatment and that helps quickly and accurately grasp whether the current transition of a particular parameter is normal when compared with a transition of the particular parameter that is estimated from the histories. The blood purification system includes an extracting device 5 capable of searching histories accumulated in a storage device 3a and extracting, as an approximate history, a history including the particular parameter approximate to the particular parameter observed at the current time in the current session of blood purification treatment; an estimating device 6 that estimates a transition of the particular parameter to be observed after the current time in the current session of blood purification treatment from the approximate history extracted by the extracting device 5; and a display control device 7 capable of displaying the transition of the particular parameter estimated by the estimating device 6 and the transition of the particular parameter observed in the current session of blood purification treatment simultaneously on a display.