PROBLEM TO BE SOLVED: To prevent a holder used for supporting a tube to a support pillar from being removed from the support pillar even in a case where a load on a tube side is large, while facilitating attachment/detachment to/from the support pillar, and further rationally reduce the size of the holder.SOLUTION: A tube holder includes: a clamp part 1 receiving a support pillar P from its side part Pa to its inside while elastically expanding an inlet 10 a holding part 2 holding a tube C in the lateral of the supporting pillar P and a support part 3 pushed against the support pillar P by a load generated in fluid inflow to the tube C.SELECTED DRAWING: Figure 5
