To efficiently carry out automatic regeneration.

In a work vehicle loading a diesel engine including a diesel particulate filter 46b collecting particulate matter PM in exhaust gas, an amount of the particulate matter PM in the diesel particulate filter 46b is calculated by a pressure sensor 52 on the upstream side of the diesel particulate filter 46b and a pressure sensor 53 on the downstream side, and automatic regeneration is carried out when the amount of the particulate matter PM exceeds the prescribed threshold. The engine is stopped during automatic regeneration, and an exhaust gas temperature when the engine is restarted is detected by a temperature sensor 59, and automatic regeneration interrupted by engine stop is carried out when the exhaust gas temperature is equal to or more than the prescribed value.