Abstract: On the basis of analyzing a school land contract disputes，a view was pointed out that the sure right of land was the key factor，and it was important to country economy development.Because the land property in present land system was vague，farmers do not dare invest in land for long term，and couldn′t finance by land mortgage，so the land profit was limited.The capitalization about sure right of land could improve land mobility，which could promote agricultural capital accumulation and provide power for country economy development.