This article penetratively analyses the locally asymptotic stability of equilibrium state to the single - variable system of the tumor immunity surveillance model by aid of the ordinary differential equation stability theory 摘要用嚴(yán)格的常微分方程穩(wěn)定性理論,對腫瘤免疲監(jiān)視模型的單變量系統(tǒng)平衡態(tài)的局部漸進穩(wěn)定性做了深入分析。