A temperature compensation module mounted in arrayed waveguide grating to manually compensate for outside temperature changes, the temperature compensation module comprising: a base that is attached to the AWG; and a moving member that is attached to the base, wherein the base includes: a first fixing part that is attached to a first sub chip including an input waveguide of the AWG; a second fixing part that is attached to a second sub chip including an input slab waveguide of the AWG; a hole being a gap between the first fixing part and the second fixing part, the hole disposed to include a cutting plane within the gap, the cutting plane for separating the AWG into the first sub chip and the second sub chip; and an elastic part to assist a linear movement of the first fixing part and connect the first fixing part and the second fixing part, characterized in, the elastic part is in a shape of a leaf spring and includes a support and a leg connecting two ends of the support to the first fixing part and the second fixing part, respectively, and a horizontal portion of the leg is parallel to the support, and a vertical structure of the elastic part suppresses vertical movements, and the moving member is attached to the first fixing part to horizontally move the first sub chip of the AWG along the cutting plane by the moving member made of a thermal compensation material, thereby arranged for reducing a change in center wavelength with a change in temperature. a base that is attached to the AWG; and a moving member that is attached to the base, wherein the base includes: a first fixing part that is attached to a first sub chip including an input waveguide of the AWG; a second fixing part that is attached to a second sub chip including an input slab waveguide of the AWG; a hole being a gap between the first fixing part and the second fixing part, the hole disposed to include a cutting plane within the gap, the cutting plane for separating the AWG into the first sub chip and the second sub chip; and an elastic part to assist a linear movement of the first fixing part and connect the first fixing part and the second fixing part, characterized in, the elastic part is in a shape of a leaf spring and includes a support and a leg connecting two ends of the support to the first fixing part and the second fixing part, respectively, and a horizontal portion of the leg is parallel to the support, and a vertical structure of the elastic part suppresses vertical movements, and the moving member is attached to the first fixing part to horizontally move the first sub chip of the AWG along the cutting plane by the moving member made of a thermal compensation material, thereby arranged for reducing a change in center wavelength with a change in temperature. a first fixing part that is attached to a first sub chip including an input waveguide of the AWG; a second fixing part that is attached to a second sub chip including an input slab waveguide of the AWG; a hole being a gap between the first fixing part and the second fixing part, the hole disposed to include a cutting plane within the gap, the cutting plane for separating the AWG into the first sub chip and the second sub chip; and an elastic part to assist a linear movement of the first fixing part and connect the first fixing part and the second fixing part, characterized in, the elastic part is in a shape of a leaf spring and includes a support and a leg connecting two ends of the support to the first fixing part and the second fixing part, respectively, and a horizontal portion of the leg is parallel to the support, and a vertical structure of the elastic part suppresses vertical movements, and the moving member is attached to the first fixing part to horizontally move the first sub chip of the AWG along the cutting plane by the moving member made of a thermal compensation material, thereby arranged for reducing a change in center wavelength with a change in temperature.