Qualitative analysis of a kind of food-predator system with functional response of Holling Ⅲ and harvest rate for any two species groups was performed. By using ordinary differential equation characterization, stability and bifurcation theory, the characteristics and the conditions of the existence and non-existence of the limit cycle of this system at equilibrium point were obtained. The investigation result was developed, also.%定性分析一类两种群均有收获率的具HollingⅢ类功能反应的食饵-捕食系统,利用常微分方程定性,稳定性及分支理论,得到此类生物捕食系统的平衡点的性态和极限环的存在,不存在的条件及开发研究的结果.
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