The concentrations of heavy metals Cu, Zn, Cr, Ni, As, Pb, and Cd in pig manure and feed samples were analyzed by randomly collecting pairs of pig feeds and manures samples from 64 pig farms in different regions of Shannxi province, China. The results indicated that the 7 target heavy metals were detected in the pig feed and manure samples. The contents of investigated heavy metals in pig feed and manure samples varied among different farms in different regions. The highest amount of Cu and Zn occurred in pig manure and feeds samples, with the mean contents of 38.33~805.61mg/kg and 90.69~1208.19mg/kg in feeds and 78.99~1543.28mg/kg and 68.72~3011.72mg/kg in manure, respectively. The maximum contents of Cu, Zn, Cr, Ni, As, Pb, and Cd in pig feeds were in 5.44, 34.27, 0.98, 0.08, 10.86, and 7.67 times than the limits in the national standards and are the main source of heavy metals in pig manure. The addition of heavy metals such as Cu, Zn and Cd etc. in pig feeds could lead the serious ecological environmental hazards and would forbid the organic fertilizer farmland application. The farmland heavy metals pollution risk evaluation indicated was conducted by geoaccumulation index method, and the result that farmlands in Shannxi provience have received overloaded manure Cd with the application of pig manures in farmlands.