A scroll compressor, comprising: a drive motor; a rotary shaft coupled to and rotated by the drive motor; a main frame disposed apart from one side of the drive motor; a fixed scroll mounted on the main frame; an orbiting scroll disposed between the main frame and the fixed scroll, eccentrically coupled to the rotary shaft, and configured to form a compression chamber with the fixed scroll and perform an orbital movement relative to the fixed scroll; and an Oldham's ring coupled to each of the main frame and the orbiting scroll and configured to restrict rotation of the orbiting scroll relative to the fixed scroll, wherein the Oldham's ring comprises: a ring body that has a ring shape, the ring body comprising a first fixing boss that protrudes from a first side of the ring body and a second fixing boss that protrudes from a second side of the ring body, a first key that is fixed to the first fixing boss and capable of being coupled to the main frame, the first key comprising a first thrust surface stepped from the first side of the ring body, and a second key that is fixed to the second fixing boss and capable of be coupled to the orbiting scroll, the second key comprising a second thrust surface stepped from the second side of the ring body, and wherein the first key has a first fixing groove into which the first fixing boss is inserted, and the second key has a second fixing groove into which the second fixing boss is inserted, characterized in that the ring body further comprises a first key coupler that is formed concavely in the axial direction by a predetermined depth at the first side of the ring body and coupled to the first key, and a second key coupler that is formed concavely in the axial direction by a predetermined depth at the second side of the ring body and coupled to the second key. an Oldham's ring coupled to each of the main frame and the orbiting scroll and configured to restrict rotation of the orbiting scroll relative to the fixed scroll, wherein the Oldham's ring comprises: a ring body that has a ring shape, the ring body comprising a first fixing boss that protrudes from a first side of the ring body and a second fixing boss that protrudes from a second side of the ring body, a first key that is fixed to the first fixing boss and capable of being coupled to the main frame, the first key comprising a first thrust surface stepped from the first side of the ring body, and a second key that is fixed to the second fixing boss and capable of be coupled to the orbiting scroll, the second key comprising a second thrust surface stepped from the second side of the ring body, and wherein the first key has a first fixing groove into which the first fixing boss is inserted, and the second key has a second fixing groove into which the second fixing boss is inserted, characterized in that the ring body further comprises a first key coupler that is formed concavely in the axial direction by a predetermined depth at the first side of the ring body and coupled to the first key, and a second key coupler that is formed concavely in the axial direction by a predetermined depth at the second side of the ring body and coupled to the second key. a ring body that has a ring shape, the ring body comprising a first fixing boss that protrudes from a first side of the ring body and a second fixing boss that protrudes from a second side of the ring body, a first key that is fixed to the first fixing boss and capable of being coupled to the main frame, the first key comprising a first thrust surface stepped from the first side of the ring body, and a second key that is fixed to the second fixing boss and capable of be coupled to the orbiting scroll, the second key comprising a second thrust surface stepped from the second side of the ring body, and wherein the first key has a first fixing groove into which the first fixing boss is inserted, and the second key has a second fixing groove into which the second fixing boss is inserted, characterized in that the ring body further comprises a first key coupler that is formed concavely in the axial direction by a predetermined depth at the first side of the ring body and coupled to the first key, and a second key coupler that is formed concavely in the axial direction by a predetermined depth at the second side of the ring body and coupled to the second key.