A semi-pneumatic tire, comprising: a tread portion configured to make contact with a road surface; a non-pneumatic portion coupled to an inner circumferential surface of the tread portion in a radial direction of the semi-pneumatic tire; a pneumatic portion coupled to an inner circumferential surface of the non-pneumatic portion in the radial direction of the semi-pneumatic tire, the pneumatic portion including a space into which an air is filled; and bonding layers respectively interposed between the tread portion and the non-pneumatic portion and between the non-pneumatic portion and the pneumatic portion, wherein the non-pneumatic portion includes: a band portion including an inner band coupled to an outer circumferential surface of the pneumatic portion and an outer band spaced apart from the inner band, the band portion surrounding an outer circumferential surface of the inner band; and spokes provided between the inner band and the outer band to connect the inner band and the outer band, the semi-pneumatic tire being characterized in that each of the spokes includes: a first member connected at one end to an inner circumferential surface of the outer band and at the other end to an outer circumferential surface of the inner band; a second member circumferentially spaced apart from the first member and connected at one end to the inner circumferential surface of the outer band and at the other end to the outer circumferential surface of the inner band; and a third member configured to connect the first member and the second member, wherein a space is defined by being surrounded by the first member, the second member and the third member of the spokes, the space being continuously extended in an axial direction of the semi-pneumatic tire, and wherein a sound-absorbing material is inserted in the space. a tread portion configured to make contact with a road surface; a non-pneumatic portion coupled to an inner circumferential surface of the tread portion in a radial direction of the semi-pneumatic tire; a pneumatic portion coupled to an inner circumferential surface of the non-pneumatic portion in the radial direction of the semi-pneumatic tire, the pneumatic portion including a space into which an air is filled; and bonding layers respectively interposed between the tread portion and the non-pneumatic portion and between the non-pneumatic portion and the pneumatic portion, wherein the non-pneumatic portion includes: a band portion including an inner band coupled to an outer circumferential surface of the pneumatic portion and an outer band spaced apart from the inner band, the band portion surrounding an outer circumferential surface of the inner band; and spokes provided between the inner band and the outer band to connect the inner band and the outer band, the semi-pneumatic tire being characterized in that each of the spokes includes: a first member connected at one end to an inner circumferential surface of the outer band and at the other end to an outer circumferential surface of the inner band; a second member circumferentially spaced apart from the first member and connected at one end to the inner circumferential surface of the outer band and at the other end to the outer circumferential surface of the inner band; and a third member configured to connect the first member and the second member, wherein a space is defined by being surrounded by the first member, the second member and the third member of the spokes, the space being continuously extended in an axial direction of the semi-pneumatic tire, and wherein a sound-absorbing material is inserted in the space. a band portion including an inner band coupled to an outer circumferential surface of the pneumatic portion and an outer band spaced apart from the inner band, the band portion surrounding an outer circumferential surface of the inner band; and spokes provided between the inner band and the outer band to connect the inner band and the outer band, the semi-pneumatic tire being characterized in that each of the spokes includes: a first member connected at one end to an inner circumferential surface of the outer band and at the other end to an outer circumferential surface of the inner band; a second member circumferentially spaced apart from the first member and connected at one end to the inner circumferential surface of the outer band and at the other end to the outer circumferential surface of the inner band; and a third member configured to connect the first member and the second member, wherein a space is defined by being surrounded by the first member, the second member and the third member of the spokes, the space being continuously extended in an axial direction of the semi-pneumatic tire, and wherein a sound-absorbing material is inserted in the space. a first member connected at one end to an inner circumferential surface of the outer band and at the other end to an outer circumferential surface of the inner band; a second member circumferentially spaced apart from the first member and connected at one end to the inner circumferential surface of the outer band and at the other end to the outer circumferential surface of the inner band; and a third member configured to connect the first member and the second member, wherein a space is defined by being surrounded by the first member, the second member and the third member of the spokes, the space being continuously extended in an axial direction of the semi-pneumatic tire, and wherein a sound-absorbing material is inserted in the space.