Abstract: In order to explore the site conditions of mining wasteland，to accelerate the restoration and reconstruction of ecological environment，9 site factors，such as altitude and plant biomass was selected from three aspects of micro topography，soil and vegetation to analyze the factors of affecting the site types of mine，and find out the dominant factors by using correlation analysis and principal component analysis.A comparative analysis of the dominant influence factors of typical site types is made to find out the differences between different site types.There was a positive and negative correlation between the site factors，and the dominant factors of affecting the site type of the open pit iron mine were capacity of saturated water holding，composition of grain size and plant biomass.Through the investigation and factor analysis about open-pit mines abandoned field and according to the classification system，mines was divided into 11 types according to the three site classification system.Based on the analysis of principal component results and the recovery of mining wasteland，the soil rock mixture slope type slope，tailings sand slope，dry waste rock type was classified as a typical site type.Mines wasteland in water retention and water holding capacity have a great difference from common soil.The saturated water holding capacity of the earth-rock slope is 11.74%；The saturated water holding capacity of dry rock slope is 5.89%；The saturated water holding capacity of the tailings slope of is 13.87%；As a control，the saturated water holding capacity of the medium loam was 31.26%.In the typical abandoned site types of mines，the content of gravel (>2 mm) on earth rock mixed slope and dry waste rock slope are more than 60%，and its particle is generally larger；This is the key point of impacting vegetation restoration；Tailings sand slope (0.25~0.075 mm) component is dominant，lacking for powder and clay composition；As a control，the content of sand mountain surface soil that is not damaged (1~0.05 mm) is 36%，and powder (0.05~0.01 mm) content is 48%.

Key words: Pen-pit iron mine, Site Factors, Vegetation restoration, Site types