The experimental effect of MF efficient trap with various traps through small flotation were compared, and the results showed that the MF trap performance and selection performance had obvious advantages. Through industrial experiments, the comparative analysis of the application effect of MF trap in Xingtai Mine coal washing plant was carried out. The experiments showed that the MF trap was more selective and effective than the current trap used in Xingtai Mine, with high yield of fine coal ash, which indicated its good selectivity and strong trapping performance. The optimal index, the dosage of MF trap was 0.6 kg/t dry coal sludge, the fine ash content was 10.54, and the extraction rate was 60.57%.