This thesis focuses on the farmer households in Guangxi, based on the predecessors achievements in research, it makes an overall study on the effects of the household internal organization, its life-period, its collective decision, the motivation mechanism and the resource allocation in the process of the agricultural investment, it also studies various factors affecting the households’ investment, pointing out that the agricultural investment in Guangxi is basically rational, in spite of being restrained by divers factors, meanwhile, there still exist something unreasonableFor these over reasons, the paper puts forward the idea normalizing and guiding the farmer households’ investment by way of reforming the traditional farmer households and developing the modern ones, concluding that, in the market-oriented economy, the key point of boosting the agricultural investment, upgrading the farmer households’ behavior of investment lies in establishing a mechanism encourages and protecting such investment Relative suggestions on the pohcy 1 Establish the mechanism of macro restriction, and standardize the governmental behavior of agricultural investment, (1) Widen the channel of thegovernmental fund into agriculture, (2) Divide the personnel and financial power between the central and local governments, 2 Found the mechanism of encouragement and protection, actively guide the farmer households in investment (1) Optimize the land regulation, by forming a mechanism of land circulation and massing motivated by the economical benefit, lessening the internal restriction within the farmer households’ investment; (2) Improve the economical conditions of the investment through economic levers, promoting the effective realization of the national macro economic goals on the micro levels; (3) Boost the Co-existence of the social service system and the farmer households’ separate management in the rural areas, initiating the agricultural investment of farmer households, (4) Enforce the responsibility of investment on personnel resources , making the investment decision more scientific and rational, (5) Clarify the investment responsibilities of the main investment body in the agricultural production and management through legislation (6) Reform the system of census registration, speeding up the build of small towns, (7) Adjust the agricultural and industrial structure and increase its economic efficiencyThe main new ideas presented in this thesis are as follows 1 It creatively brings in, based on the analysis of the farmer household organization and decision-making mechanism, three modulating methodsthe market regulation means, the home management means, the moral and patriarchal clan system means. 2 Introduces the theory of the family life-period into the analysis of agricultural investment behavior of the farmer households, the periodical phenomenon of agricultural investment of the farmer households can be interpreted clearly 3 Break through the old studying method, which the farmer household was only regarded as an individual peasant but regarded as a collective now decision-making 4 With the consideration of the fact that most of farmer households in our province are traditional farmer households, an idea has been presented that traditional farmer households should be reformed and the agricultural investment of the farmer households should be optimized Certainly, there still exist some shortcomings in this dissertation