A hand tool for reducing hand vibration, comprising: a casing including a front section, a rear section, and a buffering section connected between said front and rear sections (11, 12), said buffering section being made of an elastic material, said rear section being adapted for gripping; a driving module disposed on said front section; a power module disposed on said rear section, and electrically connected to said driving module to supply electricity to said driving module; and a workpiece connected to said driving module, extending out of said front section, and driven by said driving module to operate; said hand tool being characterized in that: said buffering section includes a main body and a protective member; said main body has a large diameter portion connected to said front section, a small diameter portion extending from said large diameter portion and connected to said rear section, a communication channel extending through said large diameter portion and said small diameter portion, and an installation slot formed in said large diameter portion and adjacent to said front section; and said protective member includes a disc body portion installed in said installation slot, and a tube body portion extending from said disc body portion and extending into said communication channel, said disc body portion and said tube body portion cooperatively defining a wire channel. a casing including a front section, a rear section, and a buffering section connected between said front and rear sections (11, 12), said buffering section being made of an elastic material, said rear section being adapted for gripping; a driving module disposed on said front section; a power module disposed on said rear section, and electrically connected to said driving module to supply electricity to said driving module; and a workpiece connected to said driving module, extending out of said front section, and driven by said driving module to operate; said hand tool being characterized in that: said buffering section includes a main body and a protective member; said main body has a large diameter portion connected to said front section, a small diameter portion extending from said large diameter portion and connected to said rear section, a communication channel extending through said large diameter portion and said small diameter portion, and an installation slot formed in said large diameter portion and adjacent to said front section; and said protective member includes a disc body portion installed in said installation slot, and a tube body portion extending from said disc body portion and extending into said communication channel, said disc body portion and said tube body portion cooperatively defining a wire channel. said main body has a large diameter portion connected to said front section, a small diameter portion extending from said large diameter portion and connected to said rear section, a communication channel extending through said large diameter portion and said small diameter portion, and an installation slot formed in said large diameter portion and adjacent to said front section; and said protective member includes a disc body portion installed in said installation slot, and a tube body portion extending from said disc body portion and extending into said communication channel, said disc body portion and said tube body portion cooperatively defining a wire channel.