Abstract: Around the trinity idea of land management under the reform of ecological civilization system to enhance the ecological management of land use,which is the comprehensive idea of land resources management in China now.And it has vital ecological value and practical significance for studying land use in lakeside ecological sensitive area.This paper took Heilongtan town in Renshou county,Sichuan province as study area,and built mathematical quantification model and econometric model to analyze the current situation of lakeside land use in Heilongtan town in 2005-2015.And differently discussed the optimization models of lakeside land use and proposes the policies and suggestions.Results showed:(1) the result of lakeside land use diversification factor and equilibrium degree in Heilongtan town was that the amplitude was small in time and it was lower than the county average in space , but,in general, it was in a state of equilibrium. (2)the result of the ecological security state of lakeside land use in Heilongtan town was that,on the whole, the evolution trend of fluctuation and take 2012 as a turning point that the security state changes from the safer stage to the safe stage and it’s totally in a safer state.(3)the influencing factors of lakeside land use ecological security state in Heilongtan town include optimization of planting structure,population density,land average livestock volume,water environmental pollution load,soil and water loss ratio,pesticide load in unit cultivated land. The population density was opposite to the expected direction,the optimization of planting structure had obvious positive effects,and the rest of the comprehensive net effect was negative.(4)Based on the change status and ecological security protection demand of lakeside land use in Heilongtan town and its development tend, there were three development models of lakeside land use were put forward that include the ecological model of returning farmland to lake and sustainable use ,the development model of compound agriculture and ecological planting,the development model of leisure agriculture and educational experience.Based on this, some policies and suggestions such as strengthen the protection of the lakeside water and soil resources, optimize the structural layout of the lakeside agriculture and regulate the management of the lakeside are proposed.