To provide a vibrator which needs no direct abutting against the gum and allows to regulate vibration to suit for the state of a user side.

The vibrator A comprises a vibration body 10 curved for upper and lower teeth to bite, and a body 20 detachably connectable to the vibration body 10, wherein the vibration body 10 is composed of a hard center material 11 and a soft surface-coating material 12 thereover, and the body 20 has a casing 21 containing a vibration motor as a vibration generating means, which transmits vibration to the connected vibration body 10. The vibration body 10 can be bitten by upper and lower teeth to transmit the vibration to them, which is in turn transmitted to the gum so that it may provide a massage effect with no direct abutting against the gum.