To provide a fuel vapor leakage inspection module, reduced in space for loading.

Since a canister port 140 is inserted in the interior of a canister 30, a housing 110 of an inspection module 100 and a canister 30 are disposed closed to each other. As a result, the total length of the canister port 140 is decreased, so that the dead space between the canister 30 and the inspection module 100 can be reduced. Since the canister port 140 and an atmospheric air port 150 are substantially parallel to each other, the canister 30, the inspection module 100 and the atmospheric air passage are disposed substantially linearly. Since a pump 200 is driven by a brushless motor 210 having a smaller axial length, a pump storing part 120 is moved backward to the canister 30 side rather than a switching valve storing part 130 storing a switching valve 300 so that the housing 110 is stepped. Therefore, a connector 180 will not project from the housing 110 to reduce the dead space.