Abstract: Joint-stock Cooperation Institution of Farmland (JCIF) is initiated in the eastern coast of China, which, as an innovation in institutional changes of farmland, well satisfies the farmer' claims for land rights during the period of social structural transformation. Many scholars have analyzed the innovation, institutional performance and intrinsic mechanism of the JCIF. This paper attempts to discuss the structure, transferable rights of the Stock ownership and authentication for stockholders爷qualification. Then it puts forward suggestions on how to formalize the stock ownership.