用有限单元数值计算方法对三极板调相式电容射频（１３．５６ＭＨｚ）热疗装置在均匀肌肉组织体模和不同功率分配条件下的温度分布进行模拟计算分析．结果表明，可通过改变三个极板电压的相位、幅值和功率分配方式来调整热场分布形态，有较好的治疗热区调整能力．该研究对三电容射频热疗临床选用功率分配及了解相应的热区形态有指导意义 The finite element numerical calculation method was used to simulate and analyze the temperature distribution of the three-plate phase modulated capacitive radio frequency (13.56 MHz) hyperthermia device under uniform muscle tissue phantom and different power distribution conditions. The results show that the distribution of the thermal field can be adjusted by changing the phase, amplitude and power distribution of the three plate voltages. This study has a guiding significance for the clinical application of power allocation and understanding of the corresponding hot zone morphology for three-capacitor radiofrequency hyperthermia