To solve a problem that the number of parts is increased because an exhaust pipe joint member connected to an exhaust pipe is supported by providing a separate supporting means in a vicinity of an outlet of the exhaust pipe of a conventional portable engine generator.

In a portable engine generator with an engine and the generator or the like mounted in a casing 3, a fixing part to fix an exhaust pipe joint member 45 connected to an exhaust pipe 86 is provided on an exhaust pipe outlet 20 formed on one surface of the casing.