Abstract: The substance of idling arable land is that arable land isn't combined with other production factors in agricultural production, or isn't combined fully. The former is the exposed-idling of arable land, and the later is the unexposed-idling of arable land. Through a survey of the Huitong County in Hunan Province, the paper finds that the quality, quantity,structure and price of labor influence differently on the exposed-idling of arable land and unexposed-idling of arable land. It is also found that labor overplus and idling arable land exist synchronously. In order to get rid of the embarrassment, the productive cost must be knockeddown; profit increase is also needed; and attracting labor to take part in agricultural production. Accordingly this paper puts forward some policy suggestions, which including incentives according to the output of land, vendues of the land management right, increasing grain price appropriately and implementing different policies on different kind of land.