An assist grip comprising: a grip body including hinge cavities (11, 12) on bases provided at opposite left and right ends; hinge assemblies including a pair of hinge bodies (21, 31) to be pivotally connected to the hinge cavities (11, 12) at opposite sides via pivot shafts (15, 16); mounting clips each formed by bending a metal having spring resiliency into a substantially U-shape and with resilient legs provided at both sides, the resilient legs at both sides including resilient bulging portions bulging outward, and the mounting clips to be respectively inserted into rectangular openings (27, 37) provided substantially at the center of the pair of hinge bodies (21, 31); and covers each including a clip support portion to be inserted into the inside of the resilient legs at both sides of the mounting clip, and to be fitted to the hinge body (21, 31) so as to cover a front surface of the hinge assembly, the cover being assembled to the hinge body (21, 31) by pushing from the front to the back side, characterized in that a first retention portion in a bent shape and a second retention portion in a flat plate shape are provided at a leading end of the resilient bulging portion of the mounting clip, and when the hinge body (21, 31) with the mounting clip is fitted into a rectangular hole provided on a body panel of a vehicle body, and the first retention portion is retained by a periphery of the rectangular hole of the body panel, and a leading end of the second retention portion is retained by a back of the body panel, and a guide groove (21c, 31c) and a guide rib are provided so as to be fitted together and slidingly contact along a push-in direction of a part where the hinge body (21, 31) and the cover slidingly contact when the cover is pushed into the hinge body (21, 31), wherein the guide groove (21c, 31c) is formed along a push-in direction on an inner side surface of a rectangular frame of the hinge body (21, 31), and the guide rib is formed on a side surface of the clip support portion of the cover or an inner side surface of a cover main body of the cover, or wherein the guide grooves (21c, 31c) are formed along a push-in direction on both inner side surfaces of a rectangular frame of the hinge body (21, 31), and the guide ribs are formed on both side surfaces of the clip support portion of the cover or both inner side surfaces of a cover main body of the cover. a grip body including hinge cavities (11, 12) on bases provided at opposite left and right ends; hinge assemblies including a pair of hinge bodies (21, 31) to be pivotally connected to the hinge cavities (11, 12) at opposite sides via pivot shafts (15, 16); mounting clips each formed by bending a metal having spring resiliency into a substantially U-shape and with resilient legs provided at both sides, the resilient legs at both sides including resilient bulging portions bulging outward, and the mounting clips to be respectively inserted into rectangular openings (27, 37) provided substantially at the center of the pair of hinge bodies (21, 31); and covers each including a clip support portion to be inserted into the inside of the resilient legs at both sides of the mounting clip, and to be fitted to the hinge body (21, 31) so as to cover a front surface of the hinge assembly, the cover being assembled to the hinge body (21, 31) by pushing from the front to the back side, characterized in that a first retention portion in a bent shape and a second retention portion in a flat plate shape are provided at a leading end of the resilient bulging portion of the mounting clip, and when the hinge body (21, 31) with the mounting clip is fitted into a rectangular hole provided on a body panel of a vehicle body, and the first retention portion is retained by a periphery of the rectangular hole of the body panel, and a leading end of the second retention portion is retained by a back of the body panel, and a guide groove (21c, 31c) and a guide rib are provided so as to be fitted together and slidingly contact along a push-in direction of a part where the hinge body (21, 31) and the cover slidingly contact when the cover is pushed into the hinge body (21, 31), wherein the guide groove (21c, 31c) is formed along a push-in direction on an inner side surface of a rectangular frame of the hinge body (21, 31), and the guide rib is formed on a side surface of the clip support portion of the cover or an inner side surface of a cover main body of the cover, or wherein the guide grooves (21c, 31c) are formed along a push-in direction on both inner side surfaces of a rectangular frame of the hinge body (21, 31), and the guide ribs are formed on both side surfaces of the clip support portion of the cover or both inner side surfaces of a cover main body of the cover.