Construction machine

A fuel filling device () for refueling a fuel tank () is disposed in the vicinity of an exhaust gas post-treatment device (). Specifically, the fuel filling device () is disposed over a hydraulic pump () provided to an engine () and at a height position equivalent to the exhaust gas post-treatment device (). Therefore, the fuel filling device () can be heated for a short period of time by the exhaust gas post-treatment device () which is exposed to high temperature soon after the start of the engine ().