The data of organic wastes (including residues of crops and forests, animal excretion, agricultural and forestry processing, industrial wastes and municipal organic wastes) and marginal land (including suitable forestland, reclaimable wasteland, existed woodland and arable land) that suited to produce plants were systematically collected, sorted out and analyzed. The corresponding resource volume and available volume for economical harvesting were also put forward. According to the situation and potentiality of biomass products in 2007, it was concluded that the total productivity of China's biomass feedstock in a year equals to 932 million tce, with organic wastes and marginal land accounting for 41.1 % and 58.9 %, respectively. It was projected that to 2030, the annual potentials of biomass feedstock will be increased to 1 171 million tce, and the share of organic wastes and marginal land will be 48.3 % and 51.7 %,respectively.