An ultrasonic surgery apparatus capable of setting surgical conditions properly in accordance with hardness of a nucleus lentis and performing surgery with efficiency is disclosed. The ultrasonic surgery apparatus includes an ultrasonic vibration inducing unit, having an ultrasonic chip which induces ultrasonic vibrations to fragment and emulsify a nucleus lentis, an input unit which inputs a judgment result of hardness of the nucleus lentis, and a setting unit which sets a condition of the ultrasonic vibrations thereafter based on the inputted judgment result.