PROBLEM TO BE SOLVED: To mix air into a blood purifier and to fill different liquids in a method of priming after connecting each blood purifier to a blood circuit in advance and setting it in a dialysis monitor when using a plurality of blood purifiers together. (EN) Provided is a blood purification system capable of preventing the inflow and mixing of blood and further reducing the time and labor burden on an operator. A blood purification system (100) including two or more blood purification units (200, 300) and a circuit connected to a blood removal side and a blood return side of the blood purification units, wherein the blood purification units are arranged in parallel. There is one or more detour circuits, and the detour circuits are connected to at least one blood removal side and blood return side circuit of the two or more blood purifiers, and each of the connection parts of the detour circuit is connected. A blood purification system having a flow path switching means, wherein the flow path switching means is selectively opened and closed. [Selection diagram] Figure 2A【課題】複数の血液浄化器を併用する際、予め各血液浄化器を血液回路に接続し、透析監視装置にセッティングした後にプライミングする方法において、血液浄化器への空気の混入や、異なる充填液の流入および混合を防止し、さらには作業者への時間や労力の負担を軽減することが可能な血液浄化システムを提供する。【解決手段】２つ以上の血液浄化器２００，３００と、血液浄化器の脱血側と返血側に接続される回路とを備えてなる血液浄化システム１００であって、血液浄化器を並列する迂回回路を１通り以上有し、迂回回路が、２つ以上の血液浄化器の少なくともいずれかの脱血側と返血側の回路に接続されてなり、かつ、迂回回路の接続部それぞれに流路切替手段を有し、流路切替手段が選択的に開閉することを特徴とする、血液浄化システム。【選択図】図２Ａ
