A vibration-damped striking tool comprising: an elongated handle having a grip segment and a connecting segment opposite to each other in a longitudinal direction; and a head having a striking surface facing forwardly, a cheek extending from said striking surface in a transverse direction transverse to the longitudinal direction, and a connected segment extending from said cheek in the longitudinal direction, wherein said connecting segment has first and second lug walls (33, 34) which are spaced apart from each other in an axial direction transverse to both the longitudinal direction and the transverse direction to define a receiving space therebetween, and each of which has a pivoting region (331, 341) that defines a pivot axis in the axial direction, and a guiding region (333, 343) that extends angularly about the pivot axis to terminate at a lateral edge area (332, 342) facing rearward; and said connected segment being received in said receiving space, and having a pivoted region which is pivotably connected to said pivoting régions (331, 341) about the pivot axis, said connected segment being thinner than said cheek to cooperatively form therebetween at least one guided region that confronts one of said guiding regions (333, 343), and a barrier region that confronts one of said lateral edge areas (332, 342) in the transverse direction, said guided region being configured to mate with and be in frictional engagement with a corresponding one of said guiding regions (333, 343) such that, when said head strikes an object, a reaction force exerted on said striking surface causes an angular displacement of said guided region from a non-striking position, where said barrier region abuts against a corresponding one of said lateral edge areas (332, 342), to a striking position, where said barrier region is disengaged from the corresponding one of said lateral edge areas (332, 342); and wherein a damping unit which is disposed between said connected segment and said connecting segment to counteract the angular displacement of said guided region so as to reduce vibration transmitted from said head to said handle, characterized in that said first and second lug walls (33, 34) extend in the longitudinal direction to terminate at first and second marginal edges (333, 343) that are configured to angularly extend about the pivot axis to serve as said guiding regions (333, 343), respectively, said connecting segment further having a rear wall interconnecting said first and second lug walls (33, 34) and extending in the longitudinal direction to terminate at an upper marginal edge which is lower than said first and second marginal edges (333, 343) so as to cooperatively define said lateral edge areas (332, 342), respectively. an elongated handle having a grip segment and a connecting segment opposite to each other in a longitudinal direction; and a head having a striking surface facing forwardly, a cheek extending from said striking surface in a transverse direction transverse to the longitudinal direction, and a connected segment extending from said cheek in the longitudinal direction, wherein said connecting segment has first and second lug walls (33, 34) which are spaced apart from each other in an axial direction transverse to both the longitudinal direction and the transverse direction to define a receiving space therebetween, and each of which has a pivoting region (331, 341) that defines a pivot axis in the axial direction, and a guiding region (333, 343) that extends angularly about the pivot axis to terminate at a lateral edge area (332, 342) facing rearward; and said connected segment being received in said receiving space, and having a pivoted region which is pivotably connected to said pivoting régions (331, 341) about the pivot axis, said connected segment being thinner than said cheek to cooperatively form therebetween at least one guided region that confronts one of said guiding regions (333, 343), and a barrier region that confronts one of said lateral edge areas (332, 342) in the transverse direction, said guided region being configured to mate with and be in frictional engagement with a corresponding one of said guiding regions (333, 343) such that, when said head strikes an object, a reaction force exerted on said striking surface causes an angular displacement of said guided region from a non-striking position, where said barrier region abuts against a corresponding one of said lateral edge areas (332, 342), to a striking position, where said barrier region is disengaged from the corresponding one of said lateral edge areas (332, 342); and wherein a damping unit which is disposed between said connected segment and said connecting segment to counteract the angular displacement of said guided region so as to reduce vibration transmitted from said head to said handle, characterized in that said first and second lug walls (33, 34) extend in the longitudinal direction to terminate at first and second marginal edges (333, 343) that are configured to angularly extend about the pivot axis to serve as said guiding regions (333, 343), respectively, said connecting segment further having a rear wall interconnecting said first and second lug walls (33, 34) and extending in the longitudinal direction to terminate at an upper marginal edge which is lower than said first and second marginal edges (333, 343) so as to cooperatively define said lateral edge areas (332, 342), respectively.