The invention relates to a medicament conveying mechanism. The medicament conveying mechanism comprises a tightening assembly, a feeding channel and a discharging channel, wherein the tightening assembly comprises a drive piece and a rotation wheel disc, the rotation wheel disc is fixed on an output shaft of the drive piece, a plurality of conveying grooves in a sunken mode are formed in the periphery of the rotation wheel disc, the feeding channel and the discharging channel are both formed in the periphery of the rotation wheel disc, the central axis of the feeding channel and the central axis of the discharging channel are parallel to each other and arranged at an interval, one end, close to the rotation wheel disc, of the feeding channel, is provided with an arc guiding block, a concave arc guiding face is formed on the arc guiding block, and a rotation cylinder is arranged on the end edge of the arc guiding block. The medicament conveying mechanism can prevent a medicament bottlefrom being squeezed to burst or broken. The invention further provides a medicament conveying method.