This study was conducted to investigate the draft data for the habitat environment and massive propagation method of Miscanthus changii, which is classified as rare species. The in-site analysis of the native soil give a indication of pH 5.24~5.48, electric conductivity (EC)0.03~0.02 $dS{cdot}m^{-1}$, organic matter (OM) 1.13~1.15%, Ca 3.4 $mg{cdot}kg^{-1}$, K 0.25 $mg{cdot}kg^{-1}$, Mg 0.53 $mg{cdot}kg^{-1}$, N 0.23%, P 2.15 $mg{cdot}kg^{-1}$ showed low and 0.33~9.12 $cmol{cdot}kg^{-1}$ CEC. Growth and tiller number in rhizome propagation of Miscanthus changii showed that horticulture media (perlite 1+vermiculate 1+peat moss 1) is the most suitable soil to habitat. As for seed propagation, germination percentage is 0% (0/20) at first seeding, 2% (1/50) at second seeding and 2.1% (6/280) at third seeding. The average germination percentage was below 2%. This is the reason why Miscanthus changi disappear at habitat of poor soil environment and low germination. We gained 61 plants that 60 rhizome propagation and 1 by seed propagation, renatural to habitat.