A linear compressor, comprising: a cylinder; a piston reciprocating along an axis inside the cylinder; a drive unit disposed on an outside of the cylinder in a radial direction thereof; the elastic body (191, 291) disposed on a rear of the cylinder and the drive unit in an axial direction, wherein the elastic body (191, 291) is formed as a plate spring; and a connecting member configured to connect the piston and the elastic body (191, 291), wherein the elastic body (191, 291) comprises a plurality of elastic units (1911, 2911) disposed circumferentially and axially symmetric with each other around an axis passing through a virtual center of the elastic body (191, 291), wherein each of the plurality of elastic units (1911, 2911) comprises an elastic portion (1911a, 2911a) that is spirally formed in a manner of moving away from the axis, an outer portion (1911b, 2911b) disposed on an outside of the elastic portion (1911a, 2911a) in a radial direction thereof, and an inner portion (1911c, 2911c) disposed on an inside of the elastic portion (1911a, 2911a), wherein a shape of the outer portion (1911b, 2911b) mates with that of the outer portion (1911b, 2911b) of an adjacent elastic unit (1911, 2911) to form a substantially continuously curved outer contour of the elastic body (191, 291), the curved outer contour corresponding to a circular contour, and characterized in that the plurality of elastic unites (1911, 2911) is separated from each other, and a slit and/or crevice (1912 to 1914, 2912 to 2914) is formed between adjacent elastic units (1911, 2911) such that the plurality of elastic units (1911, 2911) are movable independently from each other. a cylinder; a piston reciprocating along an axis inside the cylinder; a drive unit disposed on an outside of the cylinder in a radial direction thereof; the elastic body (191, 291) disposed on a rear of the cylinder and the drive unit in an axial direction, wherein the elastic body (191, 291) is formed as a plate spring; and a connecting member configured to connect the piston and the elastic body (191, 291), wherein the elastic body (191, 291) comprises a plurality of elastic units (1911, 2911) disposed circumferentially and axially symmetric with each other around an axis passing through a virtual center of the elastic body (191, 291), wherein each of the plurality of elastic units (1911, 2911) comprises an elastic portion (1911a, 2911a) that is spirally formed in a manner of moving away from the axis, an outer portion (1911b, 2911b) disposed on an outside of the elastic portion (1911a, 2911a) in a radial direction thereof, and an inner portion (1911c, 2911c) disposed on an inside of the elastic portion (1911a, 2911a), wherein a shape of the outer portion (1911b, 2911b) mates with that of the outer portion (1911b, 2911b) of an adjacent elastic unit (1911, 2911) to form a substantially continuously curved outer contour of the elastic body (191, 291), the curved outer contour corresponding to a circular contour, and characterized in that the plurality of elastic unites (1911, 2911) is separated from each other, and a slit and/or crevice (1912 to 1914, 2912 to 2914) is formed between adjacent elastic units (1911, 2911) such that the plurality of elastic units (1911, 2911) are movable independently from each other.