Introduction. Concept and principles of integrated farming system. Historical review. Classification of integrated farming system. Rotation, relay-intercropping and intercropping system of crops. Polyaquaculture in water body. Mixed standsafforestation. Agro-silviculture system. Tree-medicinal herbs intercropping. Cash tree/multiuse forest intercropping system. Integrated phyto-animal system. Integrated farming system in different scales. Integrated farming system in mountain ecosystem.Integrated farming system in wetland ecosystem. Integrated farming system in arid and semi-arid ecosystem. Agro-industry complex ecological engineering. Multi-component and multi-step use of energy resources. Systematic design for integrated farmingsystem. Analysis and assessment of integrated farming system. Perspective. Index.