A stent graft indwelling device (1) comprising a dilator (10) and a sheath (30) in which the dilator (10) and a stent graft (60) are to be loaded, the stent graft indwelling device (1) having a wire (40) or a fixed chip (20) as means for adjusting the insertion angle and/or indwelling site of the stent graft (60) when the stent graft (60) is released from the sheath (30) in a diseased part by this indwelling device, so that the insertion angle and indwelling site can be finely adjusted in a blood vessel in a semi-expansion state where the stent graft is not completely expanded.