To provide construction machinery which reduces the number of man-hours for assembly/disassembly by enabling a reduction in the number of disassembled units.

A unit U is constituted by housing an engine 2 and cooling equipment 3 in a container 14. The unit U is assembled to a revolving frame 1. A connecting port P for various types of pieces of equipment including the engine 2 of the unit U is arranged on the side of one surface of the unit U. In conveyance, the unit U is separated from the revolving frame 1, and a hydraulic oil tank 6, a revolving mechanism 5 and the like are left on the side of the revolving frame 1.