A refrigerator which increases convenience in assembly of a handle and reduces generation of scratches on doors and drawers in assembly of the handle, and a handle assembly method thereof, is provided. The refrigerator includes doors rotatably combined with a main body, a handle combined with each door to open and close each door, a first handle fixing unit assembled with each door to fix the handle to each door and provided with an inclined part fixed to the handle by a fastening unit, a second handle fixing unit assembled with each door to fix the handle to each door and combined with the handle in a sliding manner, a first connector assembled with the handle and fastened to the first handle fixing unit by the fastening unit, and a second connector assembled with the handle and combined with the second handle fixing unit in the sliding manner.