To provide a toothbrush capable of effectively irradiating unclean areas of teeth with light on brushing.

A lighting system 23 is embedded in a handle section 11 to emit light having a peak wavelength of more than 380 nm and less than 550 nm from a light emitting section 22 formed on a bristle implanted surface 20 of a head section 10 through a light guiding section 12 in a neck section 12. The light emitting section 22 has an elongated shape extending in the extending direction of the neck section 12 and is arranged at the center of the bristled surface 20 with respect to the transverse direction and brushing bristles are implanted at both its sides.