For Consteel vibrating conveyor, the horizontal excitations are generated by a four-axis-inertia- excitor, and the chute with pull rod can be considered as an inverse pendulum. Forced with horizontal excitations, the chute can be considered to do only horizontal motion when the vertical motion is omitted for long rod. The 2 degree-of-freedom model including chute and base can be built when the material is regarded as additional mass, and the model including chute and material can be built when the base is regarded as fixed. The 3 degree-of-freedom model including base, chute and material is used to analyze the horizontal motion of the whole conveyor.