A comprehensive productivity evaluation index system suitable for mining enterprises is constructed. The production efficiency is calculated with the C2R model (D0) ; the pure technical efficiency is calculated with the C2GS2 model (D1); the returns to scale are analyzed with the C2GS2 model (F1) and the C2R model (H0) ; the efficiency benchmark is selected with the SE-DEA model. Finally, pertinent policy recommendations are proposed to the enterprises that don't reach the optimal efficiency according to their input redundancy and output deficiency.