PROBLEM TO BE SOLVED: To provide a blood purification therapy support system which allows accurate necessity determination of change of a therapy condition in blood purification therapy.SOLUTION: The blood purification therapy support system which may support blood purification therapy comprises: storage means 1 for storing pieces of patient data unique to a patient which are acquired in plural dates including a non-therapy date when blood purification therapy is not performed estimation means 2 for comparing pieces of patient data in plural dates stored in the storage means 1, and estimating a state of the patient before start of therapy related to blood purification therapy and determination means 3 for determining whether or not a therapy condition of the blood purification therapy should be changed based on the state of the patient before start of the therapy estimated by the estimation means 2.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】血液浄化治療における治療条件の変更の要否判定を精度よく行わせることができる血液浄化治療支援システムを提供する。【解決手段】血液浄化治療を支援し得る血液浄化治療支援システムであって、少なくとも血液浄化治療が行われない非治療日を含む複数の日にて取得された患者固有の患者データを記憶する記憶手段1と、該記憶手段1で記憶された複数の日の患者データを比較し、血液浄化治療に関わる治療開始前の患者の状態を推定する推定手段2と、推定手段2で推定された治療開始前の患者の状態に基づいて、血液浄化治療の治療条件を変更すべきか否か判定する判定手段3とを具備したものである。【選択図】図1