The invention provides a radio-frequency
ablation method and a radio-frequency
ablation system, wherein the method comprises the following steps: acquiring needle tip temperature which is obtained when executing temperature of an
ablation region is acquired by virtue of a radio-frequency ablation instrument through an ablation needle, and acquiring a
temperature difference image which is obtainedby scanning the ablation region by virtue of magnetic
resonance equipment and comprises the position of the ablation needle; based on the needle tip temperature and the temperature different image, calculating
peripheral temperature of the ablation region; and continuing to execute an ablation operation when the
peripheral temperature cannot meet an ending condition, and stopping the ablation operation when the
peripheral temperature meets the ending condition. According to the embodiment, the peripheral temperature of the ablation region is determined on the basis of the needle tip temperature acquired by virtue of the radio-frequency ablation instrument and the
temperature difference image which is scanned by virtue of the magnetic
resonance equipment, and subsequently, on the basis of the peripheral temperature, it can judge whether the ending condition is satisfied or not, so that the purpose of implementing thorough ablation on the ablation region is achieved.