An ultrasonic vibration method and an ultrasonic vibration apparatus, which do not have a directional property in the direction of vibrations, are disclosed. A pair of ultrasonic horns (11), (12), each having an ultrasonic vibrator (13), (14) provided at an end portion thereof, are disposed in an intersecting relationship to each other, and the composite vibrations of transverse vibrations produced by the pair of ultrasonic horns (11), (12) when the other ultrasonic horns (12), (11) are excited to generate longitudinal vibrations are extracted at the intersecting point of the pair of horns (11), (12) and applied to a contact object member through a presser (22).