Drainage structure in a fuel cell electric vehicle

The invention aims to provide drainage structure in a fuel cell electric vehicle that gas exhausted from a fuel cell is exhausted into the air via a silencer and generated water from the fuel cell can be moderately exhausted. In drainage structure in a fuel cell electric vehicle provided with a fuel cell (51) for generating electric power by reacting hydrogen and oxygen, a hydrogen cylinder (52) for supplying gaseous hydrogen to the fuel cell (51), a dilution box (56) for storing gas exhausted from the fuel cell (51) and generated water, a drainage pipe (81) for leading water