To provide a method for loading a baggage capable of efficiently loading/transferring a pallet to a small sized customer distribution vehicle without impairing a transport efficiency of a large sized master distribution vehicle even in the case where various kinds of baggages having different sizes are transported.

The method for loading a baggage comprises a step S4 of setting a loading height H1 not more than the maximum loading height of the customer distribution vehicle in which the baggage should be transferred at a junction point; step 5 of setting a loading height H2 not more than a difference of the above loading height H1 and the maximum loading height of the master distribution vehicle; and step 6-step 9 of loading the baggage on a plurality of pallets at the loading height H1 or the loading height H2. At least one pallet of the pallets loaded at the loading height H1 loads the baggage in the state that the pallets loaded on the upper surface at the loading height H2 can be stacked.