The experiment was carried out in calcareous soil in Fengqiu Agriecological Experimental Station (Chinese Academy of Sciences).Organic fertilizer, inorganic fertilizer and organic fertilizer mat ching inorganic fert ilizer were used in fixed proportion(N 300 kg hm^-2, P₂O₅ 135 kg hm^-2, K₂O 300 kg hm^-2).After 10 year experiment, the content of total N, P, K and available N, P, K of soil were increased signif icantly under three fertilizing treatments.Compared with inorganic fertilizer treatment, organic fertilizer treatment had better effect on increasing the contents of total nitrogen and available nitrogen as well as the content of available P.However, there are no significant difference on the content of total potassium of soil among three treatments.The experiment results shown that it is more suitable way to match organic fert ilizer and inorganic fertilizer for increasing soil fertility.