The paper used the micro-flocculation direct filtration process to treat the micro-polluted mine water in Fuxin mine area, optimized the related parameters and researched the characteristics of filtration.The results show that the optimum dosage of PAC and flocculation time are 2~5mg/L and 3~4min, the optimum filtration rate is 10~14m/h, at this time the filtration cycle can reach 30~40h, the turbidity and suspended solids concentration of effluent water can reach respectively below 1NTUand 5mg/L, and it can accord with the national sanitation of reusing water.