A walking-type working machine in which a gas-container housing section (cassette-type gas container) and a carry handle are mounted to a handle post. The walking-type working machine (10) is provided with a cassette-type gas container (21) mounted to a handle post (16), which rises upward and rearward from a rear section (11a) of a working machine body (11), so as to be oriented in the longitudinal direction of the handle post. A gas engine (12) is driven by fuel in the cassette-type gas container (21). The walking-type working machine is provided with a carry handle (22) for carrying the machine. The carry handle (22) is mounted to the handle post and is formed so as to surround the cassette-type gas container. The carry handle has a grip (45).