In order to study the ability and mechanism of sandland blowouts remediation by two clone plants L. secalinus and P. villosa, man-made blowouts were set up in the populations of two clonal plants. The results showed that, both clonal plant species had produced more new ramets in the blowouts than in the natural quadrats, suggesting that clonal plants had strong ability in blowouts remediation; while the biomass, number of leaves and ramet height of these ramets were smaller in blowouts than in natural quadrats, due to the poor nutrient. L. secalinus had stronger ability of vegetation remediation than P. villosa, for it had produced more new ramets in blowouts through the plasticity of spacers. The new ramets of L. secalinus in blowouts were produced by the buds in the rhizomes which spread from outside of blowouts; whereas which of P. villosa were produced both by the buds in the rhizomes which spread from outside, and by the buds in the rhizomes inside which were freed from dormancy under wind erosion condition.