① Adjust measures to local conditions. Ecological farm is based on reasonable and full use of local natural resources and natural conditions. In different areas, the best ecological farm can be established only by comprehensive investigation and analysis of local characteristics.

② comprehensiveness. The difference between ecological farm and ordinary agricultural production system is that the former improves productivity through comprehensive planning of energy utilization and economic benefits, thus avoiding excessive consumption of natural resources and destruction of ecological balance.

③ Stability. Including the relative stability of nutrition and energy balance and the steady growth of economic benefits. The flow of nutrients in the whole ecosystem is a circular movement. For a certain range of ecological farms, we should try our best to maintain the ecological balance in a better stable state. The energy of ecological farms in a certain range is provided by the sun. Therefore, solar energy should be used as much as possible to maintain the stable energy input and output of the farm. The steady growth of farm economic benefits is based on the dynamic balance calculation of nutrients and energy. Therefore, the cost-benefit analysis of multi-objective input, output and cycle should be carried out, and the scheme with the best economic benefits should be selected to guide the production of agriculture, forestry, animal husbandry, by-products and their processing industries, and realize the goal of stable growth of economic benefits of system output.