This vaporized fuel processing device that is suitable for a hybrid vehicle is provided with: a vaporized fuel pathway (16) that interconnects a fuel tank (2) and a canister (2); a sealing valve (21) that opens and closes the vaporized fuel pathway (16); a purge pathway (19) that interconnects the canister (3) with the air intake pathway (17) of an internal combustion engine (1); a first purge control valve (23) that opens/closes the purge pathway (19); a tank opening pathway (31) that interconnects the fuel tank (2) and a position of the purge pathway (19) upstream of the first purge control valve (23); and a second purge control valve (32) that opens/closes the tank opening pathway (31). When purging the canister (3), by opening the second purge control valve (32), the vaporized fuel within the fuel tank (2) is directly processed by the internal combustion engine (1), and so there is no increase in the amount of suction at the canister (3).