This paper, by means of employing statistics, cases, references, expert query, tendency extrapolation and regional analogy, estimates Chinas mine damaged land coefficient, restorable ratio and reclamation use proportion, and forecasts the damaged mine lands, lands pending for reclamation and reclamation potential. The results show: 1) the damaged land coefficient is 0.31hm^2/10^4t in underground coal mines, 0.10hm^2/10^4t in opencast coal mines,0.30hm^2/10^4t at iron mines, the damaged land area is 13.33hm^2 per 100million bricks; 2) Until 2020, the damaged mine land is estimated to amount to 806.60×10^4hm^2, of which the coal mines possess the most, up to 233.93×10^4hm^2,120.20×10^4hm^2 to be restored. The damaged coal mine land can be restored to farmland, grassland and construction, 52.99×10^4hm^2, 55.19×10^4hm^2, and 12.20×10^4hm^2, respectively; 3) Reclamation potential is big that a sum of 308.78×10^4hm^2 can be restored, of which 148.83×10^4hm^2 to farmland, 125.31×10^4hm^2 to grass or woods land, 34.64×10^4hm^2 to construction land. The damaged coal mine land is key to be restored to farmland.