To provide a blade changing tool simply and efficiently carrying out changing work of a cutting blade to which attribute information is attached.

Information of a recording code 36 is transferred to a control means by certainly acquiring it without requiring separate special operation only by gripping the cutting blade 31 to be a changed by a gripping part 81 for the changing work, since it is devised to transfer the information of the recording code 36 attached to the cutting blade 31 to the control means by reading it by a recording code reading transfer means 85 in a state of gripping the cutting blade 31 to be changed by the gripping part 81.