An ultrasound-guided ablation method captures an objective area to be ablated in an ultrasound scan area of an ultrasound transducer and delineates the objective area on an ultrasound image specifies an ablation target area to display the ablation target area with a margin necessary for ablating the objective area on the ultrasound image processed by an ultrasound observation device and displayed on a display device ablates, by an ablation device, the ablation target area displayed on the ultrasound image and checks, on the ultrasound image, that an ablated area ablated by the ablation device has reached the ablation target area displayed on the ultrasound image.
