Abstract: To improve landscape management with a view to promote diversity of natural enemies for controlling pest population to a lower level has become a new approach to bio-control of pest in recent years. A review is presented of the researches done both at home and abroad in this aspect, with emphasis on introducing principles of regulating agricultural landscape biodiversity and pest bio-control. And the landscape-management-based approaches to bio-control of pest in agricultural landscape is also summarizes. In the end, the problems with and orientation of the approaches in the current scenario of agricultural policies in China are discussed.