To provide a brush body comprising core sheath filaments that can stably obtain electrical connection with a conductive member and supply an effective component convergently to an appropriate part, and to provide a method for manufacturing the brush body, and an electric toothbrush comprising the brush body.

Bristle bunches 30 each comprising a plurality of filaments 40 are folded at an intermediate part of the longitudinal direction and press-fixed into insertion holes 23 of a bristled base 22 by flat wires 32 at the folded parts 31. Each filament 40 comprises a core part 41 containing a conductive material, and an insulating sheath part 42 covering the core part 41. Each end of the filament 40 is formed with a tip exposed part 41A with the core part 41 exposed from the sheath part 42. An intermediate exposure part 41B with the core part 41 exposed from the sheath part 42 is formed at an intermediate part in the longitudinal direction of the filament 40.