To solve the problem that the dust concentration exceeds on the rock comprehensive tunneling face, the dust fall plan is established according to comparative analysis for improving working environment. On the background of belt transport lane in the south of Xue village mine, the discrete phase model (DPM) for computational fluid mechanics is used for numerical simulation of dust movement rule on rock comprehensive tunneling face on the basis of the gas-solid two phase flow theory. In contrast to the field measured data, the simulation result almost conforms to the measured data. The study found that, after dust source generated, the dust moves with air flow direction on vertical, random diffuses along the merry tangential direction on transverse. The frictional dust concentration in roadway drivage rises sharply to maximum, then gradually slows down. In comprehensive dust fall scheme, the order of the dust fall effect, according to quality, is: both installation at the same time, installation of mural ram, installation convulsions shaker system, press in type ventilation. According to the measured data, taking the press condition ventilation as reference, the average removal rates of installing air duct, installing dust collector and installing the two at the same time are 49.4％, 67.1％ and 86.2％, respectively.