The present invention relates to a coil body of a transcranial stimulator and a transcranial stimulator. According to the present invention, a coil body of a transcranial stimulator that generates a TMS pulse and radiates it to the skull is formed in a spiral shape of a flat plate and is formed by a litz wire. A litz wire coil 110 configured to radiate a TMS pulse, and a litz wire coil 110 attached to the litz wire coil 110 so as to be in close contact with the litz wire coil 110 along the spiral of the litz wire coil 110 and the litz wire coil 110 and It is formed in a spiral having the same number of turns, and is configured to include a conductive heat sink coil 120 that radiates TMS pulses and at the same time radiates heat generated in the Litzwire coil 110, and the heat sink coil 120 is formed in a tubular shape in which the cooling water supply hole 121 is formed through the inside along a spiral, and cooling water is supplied to the cooling water supply hole 121 to cool the heat of the heat sink coil 120 and at the same time by conduction It is characterized in that the heat generated in the litz wire coil 110 is cooled, and there is an advantage in that workability is easy and heat dissipation efficiency can be increased.
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