A method for optimizing component type arrangement in which multiple component types are optimally disposed on multiple installation positions when an automatic feeder device which automatically loads the component storage tape, a manual feeder device which does not automatically load the component storage tape, and a reel holding device are installed into the installation positions on a common pallet, the method includes a step of determining a portion of the multiple installation positions as a fixed position and fixing the determined automatic feeder device to the fixed position; and an optimizing step of performing a simulation optimally disposing the multiple component types on the multiple installation positions under a condition that the manual feeder device can be moved to an arbitrary installation position other than the fixed position without moving the automatic feeder device from the fixed position.