Abstract: By means of modeling the relationships between stand branch and leaf biomasss, u nderstory vegetation biomass and forest canopy density, respectively, the suitab le canopy density of Pinus elliottii plantation for soil and water conservat ion was calculated. Using the models of stand canopy density and average tree di ameter and stocking density, the suitable stand density of Pinus elliottii f or soil and water conservation was made out, and expressed by the formula N₁＝15761.6/D. Using the stand density and the stand basal areas per hectare as the i ndependent variables, introducing the maximum stand value increment to be optima l index function, the series of optimal stand management density of Pinus elli ottii stands for timber and resin production were worked out by means of dynam ic programming(N₂＝23625.12D^-1.1523 abstractThe suitable management density for multi benefit management pattern in Pinus elliottii plantation on the hilly region of Jiangxi Province was in the range between the above two models.