According to one embodiment, a magnetic recording device includes a magnetic head, a first circuit, and a second circuit. The magnetic head includes a magnetic pole, a first shield, a stacked body provided between the magnetic pole and the first shield, a first terminal electrically connected to the magnetic pole, a second terminal electrically connected to the first shield, and a coil. The first circuit is electrically connected to the first terminal and the second terminal. The second circuit is electrically connected to the coil. The first circuit performs at least a first operation. In the first operation, the first circuit supplies a first current to a current path between the first and second terminals when the second circuit supplies a recording current to the coil. The first current is smaller than a second current. The second current causes an electrical resistance of the current path to oscillate.