Abstract: This invention relates to a medical powder filling machine, especially a medical powder filling machine which can control the filling amount of powder by means of a non-step speed mechanism, the powder hopper mouth of the medical powder filling machine being controlled by a limit switch, the limit switch would start a motor to make the powder in the powder hopper to be filled into medical capsules when the powder hopper covering the whole medical capsule dish so as to get the same amount of medical powder in each medical capsule, furthermore the medical powder filling machine having an automatic powder filler which can fill the powder into a mold cavity of the medical capsule dish accurately by means of an intermittent movement of the medical capsule dish, in addition, the rotation speed of the powder filler and the stirrer for powder hopper being controlled by a control box, and the medicine dish motor being controlled by a non-step speed motor so as to avoid complex gear assembly.