This paper mainly studies the rental selection of the company and the farmer in consideration of land loss. Among them, the leasing behavior is divided into long-term leasing and short-term leasing. Research has shown that land loss and default costs will affect whether the company and the farmer choose long-term leasing or short-term leasing. For the company, default cost is higher, the income will reduce, and then the company will choose long-term leasing mode. On the contrary, when land loss coefficient is larger, replacement land yields more, and then the company will choose a short-term leasing mode. For the farmer, when the high cost of default is paid by the company, he will choose short-term leasing. While land Loss is small, he will give priority to the long-term leasing.