To provide a dialysis base unit and dialysis system capable of taking a proper step according to a used dialysate supply device.SOLUTION: There is provided a dialysis base unit 3 which is provided separate from a dialysate supply device 2 for supplying a dialysate, receives supply of the dialysate from the dialysate supply device 2 for performing hemodialysis, the dialysis base unit further comprising dialysate supply device identification means 4 capable of identifying a connected dialysate supply device 2 connected to the base unit.SELECTED DRAWING: Figure 1【課題】使用する透析液供給装置に応じて適切な措置を講じることが可能な透析用ベースユニット及び透析システムを提供する。【解決手段】透析液供給用の透析液供給装置2と別体に設けられ、透析液供給装置2から透析液の供給を受けて血液透析を行う透析用ベースユニット3であって、接続された透析液供給装置2を特定可能な透析液供給装置特定手段4を備えた。【選択図】図1