The utility model provides a knocking wrench, which relates to the technical field of mechanical and chemical processing, and comprises a wrench main body and a clamping piece, the wrench main body comprises a jaw and a handle, and the handle is connected with the jaw; the clamping piece is arranged on the handle and used for being connected with a bolt to be screwed in a clamped mode. Due to thearrangement of the clamping piece, an operator does not need to apply other manual external force to the knocking wrench to prevent the knocking wrench from falling off or being thrown out when the handle is knocked by a hammer. The knocking wrench provided by the utility model not only is convenient for an operator to disassemble the bolt, but also can prevent the knocking wrench from falling offfrom the bolt to be screwed or being thrown out to injure people when the handle is knocked, so that the safety is improved. Therefore, the knocking wrench solves the problems that an existing knocking wrench is inconvenient to use and low in safety.