Abstract: Abstract：In order to study on the motion law of the variable cohesive coal particles moving on the vibrating feeder under different vibrating direction angles, we employ the JKR-Cohesion model to simulate their movements based on the EDEM software. The results show that for the variable cohesive coal particles , the fluctuation range of the flux value decreases to the steady state along with the increase of the vibrating direction angle ,and the best effective vibrating direction angles for the low viscosity coal particles, medium viscosity coal particles and high viscosity coal particles are 35°～45°、40°～50° and 45°～55°,respectively.