An electric toothbrush provided with a function for oscillating a brush body by rotating a weight and a function for applying current inside a users mouth. The electric toothbrush includes a brush body. A main body includes an attachment shaft and which is formed by a conductive member. The brush body is attached to the attachment shaft. A weight is arranged in the attachment shaft. A motor rotates the weight and oscillates the brush body through the attachment shaft. A POWER supply is arranged in the main body. A first electrode is connected to the POWER supply. The first electrode is arranged ON the main body in a state exposed from a surface of the main body. A second electrode is connected to the POWER supply. The second electrode is arranged ON the brush body in a state exposed from a surface of the main body.
