A growable continuum instrument, comprising: a growable tube comprising an inner layer, an outer layer, and a fluid chamber between the inner layer and the outer layer, the fluid chamber being used to accommodating fluid; the growable tube comprising a turnable region located at a distal end and at which the inner layer and the outer layer are connected and turnable, the outer layer is turned inward in the turnable region or the inner layer is turned outward in the turnable region; the growable continuum instrument further comprising: one or more serially connected continuum structures, disposed in a channel surrounded by the inner layer of the growable tube, the continuum structure being bendable to drive the growable tube to bend, the continuum structure comprising: three or more spacer discs; and a plurality of connecting structures, the connecting structure comprising: one or more flexible structural bones, a first end and a second end of the one or more flexible structural bones are respectively fixedly connected to the adjacent spacer discs, and the one or more flexible structural bones are distributed along a circumferential direction of the spacer disc; and one or more driving structural bones, a first end of the one or more driving structural bones is fixedly connected to a distal spacer disc of the one or more continuum structures, and a second end of the one or more driving structural bones is used to receive drive to independently drive the one or more continuum structures to bend; wherein the plurality of connecting structures comprise at least a first connecting structure and a second connecting structure, the first connecting structure comprises one or more first flexible structural bones, a first end and a second end of the one or more first flexible structural bones are respectively fixedly connected with a first and a second adjacent spacer discs, the second connecting structure comprises one or more second flexible structural bones, a first end and a second end of the one or more second flexible structural bones are respectively fixedly connected with the second and a third adjacent spacer discs, and a distribution of the one or more first flexible structural bones along the circumferential direction of one side of the second spacer disc is different from a distribution of the one or more second flexible structural bones along the circumferential direction of the opposite side of the second spacer disc. a growable tube comprising an inner layer, an outer layer, and a fluid chamber between the inner layer and the outer layer, the fluid chamber being used to accommodating fluid; the growable tube comprising a turnable region located at a distal end and at which the inner layer and the outer layer are connected and turnable, the outer layer is turned inward in the turnable region or the inner layer is turned outward in the turnable region; the growable continuum instrument further comprising: one or more serially connected continuum structures, disposed in a channel surrounded by the inner layer of the growable tube, the continuum structure being bendable to drive the growable tube to bend, the continuum structure comprising: three or more spacer discs; and a plurality of connecting structures, the connecting structure comprising: one or more flexible structural bones, a first end and a second end of the one or more flexible structural bones are respectively fixedly connected to the adjacent spacer discs, and the one or more flexible structural bones are distributed along a circumferential direction of the spacer disc; and three or more spacer discs; and a plurality of connecting structures, the connecting structure comprising: one or more flexible structural bones, a first end and a second end of the one or more flexible structural bones are respectively fixedly connected to the adjacent spacer discs, and the one or more flexible structural bones are distributed along a circumferential direction of the spacer disc; and one or more driving structural bones, a first end of the one or more driving structural bones is fixedly connected to a distal spacer disc of the one or more continuum structures, and a second end of the one or more driving structural bones is used to receive drive to independently drive the one or more continuum structures to bend; wherein the plurality of connecting structures comprise at least a first connecting structure and a second connecting structure, the first connecting structure comprises one or more first flexible structural bones, a first end and a second end of the one or more first flexible structural bones are respectively fixedly connected with a first and a second adjacent spacer discs, the second connecting structure comprises one or more second flexible structural bones, a first end and a second end of the one or more second flexible structural bones are respectively fixedly connected with the second and a third adjacent spacer discs, and a distribution of the one or more first flexible structural bones along the circumferential direction of one side of the second spacer disc is different from a distribution of the one or more second flexible structural bones along the circumferential direction of the opposite side of the second spacer disc.