Abstract: On the basis of energy ecology theory and input-output method, the energy flow and utilization efficiencyin Shengli Oil Field Ecological Farm are analyzed and calculated. The shortage of system production and problems in energyutilizatlon are,summarized. Suggestions for the adjustment of industrial and energy input structures within system are proposed. This study provides a scientific basis for raising the productivity and energy conversion efficiency of system. 

Key words: energy analysis, ecological farm, agricultural ecosystem