Intravascular stent, stent implanting method and stent assembly

The invention provides an intravascular stent, a stent implanting method and a stent assembly and belongs to the field of medical equipment. The intravascular stent comprises a first stent unit, a second stent unit and a first connecting part, wherein the first stent unit and the second stent unit are connected through the first connecting part; the second stent unit can be elastically deformed through the first connecting part and is stored in the first stent unit. The stent assembly comprises the intravascular stent. The intravascular stent not only can be expanded in the radial direction, but can also be retracted in the axial direction; even if a lesion vessel is relatively long, the intravascular stent does not need to be implanted by sections for a plurality of times, so that the surgical time is shortened and the surgical risks are reduced; the simplicity of surgeries is improved and the incidence of in-stent restenosis is reduced; furthermore, the treatment effect of diseases is improved. The stent assembly provided by the invention can be used for efficiently and simply implanting the intravascular stent into the relatively long lesion vessel, and the intravascular stent does not need to be implanted by sections for a plurality of times, so that the stent assembly has the characteristics of short surgical time, low risks and good effect.