This article analysis the characteristic and evolution mechanism of rural human settlement system by self-organization theory. Rural human settlement is a dynamic complex giant system which contains 3 elements combination-natural environment, sociocultural environment and regional environment. Also it possesses the self-organizingcharacteristic of openness, non-equilibrium nonlinearity and instability. This article stimulates the evolution process andevolution mechanism of rural human settlement system by logistic growth curve models, then pres...