Abstract: This paper is dedicated to the study of a class of tumor immune models with threshold control strategies. The Filippov theory was used to analyze the sliding mode dynamics and global dynamics. It is found that the dynamic behavior of the system changes with the change of thresholds, including the boundary focus branch.#@#@#摘要: 本文致力于研究一类具有阈值控制策略的肿瘤免疫模型。利用Filippov理论分析了滑模动力学和全局动力学。 研究发现，系统的动力学行为随着阁值的改变而改变，包括边界焦点分支。
