Catalytic converter in the exhaust muffler, by being arranged so as to avoid the wheel clearance recess after the required size and depth, without detaching the exhaust muffler while avoiding size increase of the body to maintain good appearance replacement of the rear wheel provide an exhaust apparatus for a scooter type vehicle capable of;. on the opposite side side and a power transmission mechanism disposed on one side of rear wheel (40) (31 and 33), internal exhaust muffler with a catalytic converter (90) (71) is disposed, the portion facing the rear wheel axle (35) in rear wheels (40) side of the inner wall of the exhaust muffler (71) (73a), exhaust instrumentation of the scooter-type vehicle rear wheel escape recess (73P) is formed; in location, the catalytic converter (90) is placed in front of the wheel escape recess later in the exhaust muffler (71) (73P) exhaust system.