PROBLEM TO BE SOLVED: To provide a catheter set in which, when using a catheter having a first lumen and a second lumen from an unused state, it is possible to quickly make a guide wire a usable state of being inserted into the first lumen and the second lumen.SOLUTION: A catheter set 10 comprises: a catheter 20 having a catheter body 201 which has a first lumen and a second lumen 201b disposed on a base end side relative to the first lumen via a gap: a catheter storage body 2 having a hollow part 211 which has a swirl-state wound shape, and capable of storing the catheter 20 which is in an unused state in the hollow part 211 and an auxiliary tool 4 which is detachably attached to the catheter 20, capable of being disposed on the gap in the attached state, and assisting insertion of the guide wire from the first lumen to the second lumen 201b. The auxiliary tool 4 is stored in the hollow part 211 with the catheter 20 in the attached state.SELECTED DRAWING: Figure 2
