The utility model provides a tool clamp of centre gripping copper terminal stud, wire copper nose includes mounting hole and wire grafting pipe, tool clamp includes alternately pivotally connected to's the two pincers bodies, the front end of the two pincers bodies is provided with the module respectively, the back end of the two pincers bodies can be made two modules open and shut relatively by the operation, the faying face of two modules all is formed with a recess, when two modules are closed relatively, the recess of two modules encloses the centre gripping passageway that becomes to linkup, this centre gripping passageway includes coaxial first section and second section of arranging, first section is used for holding the pipe of pegging graft, the second section is the toper, be used for guiding the wire to insert the pipe of pegging graft, the minimum bore less than or equal to grafting bore of pipe of second section.