Engineering machine and fuel consumption monitoring method

An embodiment of the invention provides an engineering machine and a fuel consumption monitoring method. Through the cooperation of an engine, an electronic control unit and a controller in the engineering machine, the electronic control unit can acquire parameter information of the engine within a set period of time and a first fuel consumption value of the engine within the set period of time and send them to the controller; the controller can acquire a second fuel consumption value based on the parameter information, employ a first preset formula to calculate the first and second fuel consumption values to obtain a first fuel consumption deviation, compare the first fuel consumption deviation with a preset value to obtain first comparison results, and acquire fuel consumption state of the engineering machine according to the first comparison results. The above arrangement allows whether the fuel consumption state of the engineering machine is abnormal to be monitored, so that a usercan perform maintaining