Abstract: The paper offers a preliminary theory about the effect of agricultural Foreign Direct Investment (FDI) on the host country using the case of cross-strait agricultural cooperation between Fujian and Taiwan. Currently land is allocated through integration in all the cross-strait agricultural co operations. Given the fact that land provides social security to Chinese peasants and the fact that the agricultural FDI is very different from the industrial FDI in terms of their respective demand for land, this paper finds that the land allocation mode through integration in the cross-strait agricultural cooperation will bring great risks to mainland Chinese society. We suggest that mainland China to adopt the networkization as an alternative mode of land allocation based on an analysis of the cost-benefit of these two modes of land allocation.