Abstract: In this paper ,the roetbod of sys tem dynamics was used to study the relationship between structure and function of a village agricultural system from the viewpoint of bio-energy transference.The dynamicrelations among various factors in the aystem were determined on the basis of experiments and invasti-gations.Then a set mathematical model was designed to deseribe the development of the system.Finallya simulation experiment was carried out by computer. The results showed that, according tor the system discussed, the yield of crops may be increased and the economic and ecological benefits of the system improved by controling the population, raising heat efficiency of fuel, decreasing the proportion of bio-energy used as fuel, adjusting the structure of crops and developing animal husbandry.