The present invention relates to a brushing guide elastic toothbrush comprising: a toothbrush head having bristles provided on the outer circumferential surface of one side in the longitudinal direction; a toothbrush handle connected to the rear end of the toothbrush head in the longitudinal direction and extending in one direction such that a user can hold the toothbrush handle by hand; and an elastic rotation restoring part provided between the toothbrush head and the toothbrush handle and allowing rotation of the toothbrush handle and rotation of the toothbrush head based on the rotation of the toothbrush handle. When force is applied to the toothbrush handle by the user such that the toothbrush handle rotates in one direction with respect to the longitudinal direction while the bristles are pressed and in close contact with the user's teeth or gums, the elastic rotation restoring part allows the rotation of the toothbrush handle and stores a rotational force generated by the toothbrush handle, and when the pressure contact of the bristles is released from the user's teeth or gums while a rotational force generated by the toothbrush handle is stored in the elastic rotation restoring part, the elastic rotation restoring part may provide the stored rotational force to the toothbrush head such that the teeth or gums can be cleaned by the bristles while the toothbrush head rotates in the same direction as the toothbrush handle.