Provided is a construction machine where a pilot hose is easily routed. The construction machine includes a seat stand, an operator's seat provided on the seat stand, a remote control valve provided just above a front end of the seat stand at least one of right and left sides of the operator's seat; a hydraulic valve; and a pilot hose interconnecting the remote control valve and the hydraulic valve. The seat stand has an upper surface including a specific surface located beneath the remote control valve and a reference surface on which the operator's seat is installed. A step is provided between the specific surface and the reference surface to make the specific surface be lower than the reference surface, thus enlarging a space for routing the pilot hose beneath the remote control valve.