The invention relates to the technical field of notebook packaging machines, and discloses a cover indentation cutter grooved wheel position adjusting mechanism of a notebook packaging machine. The mechanism comprises a main body rod, wherein the main body rod is of a hollow cylindrical structure, the outer side wall of the main body rod is sequentially sleeved with a first indentation wheel and a second indentation wheel from left to right, the first indentation wheel and the second indentation wheel are distributed in a bilateral symmetry mode, and a laser range finder is fixedly embedded in the side, opposite to the second indentation wheel, of the first indentation wheel; an external power source can be conducted to a conductive block through an electric brush, the conductive block can supply power to a servo motor and the laser range finder, meanwhile, electric power on the conductive block can be conducted to an electromagnet through a conductive piece, the electromagnet is magnetized, then the electromagnet at one end is attracted to a transmission shaft rotating through power, and the electromagnet at the other end is fixed on metal, so that the installation is more convenient and faster, and when a fault occurs, the electromagnet is directly powered off and disassembled, and the disassembly and the installation are more convenient and faster.