Abstract: A crimping tool comprises a crimping operation information detect unit for detecting information concerning a crimping operation; a display unit for displaying quantity information; and, a display control unit for allowing the display unit to display the quantity information in accordance with the information detected by the crimping operation information detect unit. A crimping tool comprises a crimping operation information detect unit for detecting information concerning a crimping operation; and, a pressure judge unit for judging, in accordance with information detected by the crimping operation information detect unit, whether pressure is normal or abnormal.