本文介绍了用铁磁体植入式热疗法治疗恶性肿瘤的优点和铁磁体植入式脑肿瘤热疗仪的治疗原理 ;分析了用于铁磁体植入式脑肿瘤热疗仪的高频电流振荡器及其控制和保护电路的工作原理 ;给出了高频谐振电路的参数设计方法 ;最后给出的实验结果证实了该高频电流振荡器应用于热疗仪的可行性 This article describes the advantages of using ferromagnet implanted thermotherapy for the treatment of malignant tumors and the treatment principle of the implantable brain tumor thermotherapy device. The high frequency current oscillation And the working principle of its control and protection circuit. The design method of the parameters of the high frequency resonant circuit is given. The experimental results show that the high frequency current oscillator is suitable for the thermotherapy device