目前射频加热治疗肿瘤在临床研究方面已取得了相当大的进展 ,但在热物理方面所做的研究还较少。为了能更有效地指导临床实践 ,对射频加热治疗肿瘤的体模实验进行了描述 ,对体模内的电场和热场进行了分析 ,建立了二维的似稳电场模型和热物理模型 ,用有限元方法对体模实验进行了模拟计算 ,获得了电磁波能量在体模中的比吸收率和体模实验稳态时的温度场。模拟计算的结果和实验结果相比较达到了接近实用的精度 ,验证了该模型的合理性 At present, the radiofrequency heating treatment of tumors has made considerable progress in clinical research, but the research done in the field of thermophysics is still relatively small. In order to guide the clinical practice more effectively, the phantom experiment of radiofrequency thermotherapy is described. The electric field and thermal field in the phantom are analyzed, and the two-dimensionally simulative electric field model and thermophysical model are established. Finite element method was used to simulate the phantom experiment. The specific absorption rate of the electromagnetic energy in the phantom and the temperature field in the steady state of the phantom experiment were obtained. Compared with the experimental results, the simulation results reach the practical accuracy, which verifies the rationality of the model