To provide an engine device in which an exhaust emission control system 1 is arranged in an engine 70 to have high rigidity as one of structural components of the engine 70.

In the engine device, the exhaust emission control system 1 having a diesel oxidation catalyst 2 for an exhaust gas purification, a soot filter 3, a catalyst case 5 housing the diesel oxidation catalyst 2, and a filter case 21 housing the soot filter 3 is assembled in the engine 70. The catalyst case 5 and the filter case 21 are connected by flange bodies 25, 26. In the support of the exhaust emission control system 1 by a fly wheel housing 78 of the engine 70, one end side of a support leg body 19 is fixed to the outer peripheral surface of the catalyst case 5, and another end side of the support leg body 19 is fastened to the upper surface of fly wheel housing 78.