PROBLEM TO BE SOLVED: To enable more economical use of a working machine by displaying fuel consumption suitable for the working machine.SOLUTION: A display structure includes: a fuel consumption operation means 29D for operating a fuel consumption under working condition, and for operating a fuel consumption under non-working condition； and a display control means D for controlling operation of a display means A on the basis of output of the working condition detection means C and the fuel economy operation means 29D. A display state in a fuel consumption display area automatically changes to a fuel consumption display state in the working condition, which is output by the fuel consumption operation means 29D, in the working condition, and it automatically changes to a fuel consumption display state in the non-working condition, which is output by the fuel consumption operation means 29D, in the non-working condition.【課題】作業機に適した燃費表示を行なうことにより、作業機のより経済的な使用を可能にする。【解決手段】作業状態での燃費を演算し、又、非作業状態での燃費を演算する燃費演算手段２９Ｄと、作業状態検出手段Ｃ及び燃費演算手段２９Ｄの出力に基づいて表示手段Ａの作動を制御する表示制御手段Ｄを備えて、燃費表示領域の表示状態が、作業状態では、燃費演算手段２９Ｄが出力する作業状態での燃費を表示する状態に自動的に切り替わり、非作業状態では、燃費演算手段２９Ｄが出力する非作業状態での燃費を表示する状態に自動的に切り替わるように構成した。【選択図】図２
