Abstract: The grey system relevant analysis method was used to s tudy the main influential factors of Agricultural Ecological-economic System in Baicheng city， the results show that the peasant population and agricultural acreage have the greatest influence on the total output value of agriculture amo ng all comprehensive factors. The farming, forestry, animal husbandry and fish ery are unbalance in development. The capability of the farmers’ individual i nvests is low. According to the an alysis of grey-relation between the agricultural modernization level and total output value of agriculture, the dosage of chemical fertilizer has the greates t contribution to the total output value of agriculture. The power-driven irriga tion and drainage equipments, the effective irrigation area and the built electr omechanicafl wells have less relation to the total output value of agriculture b ecause of improperness or lowness of utilization. According to the analysis of g rey relation between farm product yield and the total output value of agricultur e, the output of maize makes the greatest contribution. Combined with the actua l circumstances, the measures for improving agriculture were put forward.

Key words: grey-relation analysis, agricultural ecological-economic system, Baich eng city