The invention relates to an engineering machine cab. The invention provides the engineering machine cab aiming at the defects that the cost of an installation structure of an existing engineering machine cab is high or the installation is inconvenient. The engineering machine cab comprises a cab box body; the lower part of the cab box body is provided with at least four cab mounting seats; each mounting seat comprises a bent plate; the two ends of each bent plate are welded with the lower part of the cab box body; each bent plate comprises a flat plate part and each flat plate part is provided with a mounting hole; a thread part is mounted between the flat plate part and the cab box body; the thread part is welded with the flat plate part; the thread part is provided with a threaded hole; and the threaded hole is coaxial and is communicated with the mounting hole in each flat plate part. The mounting seats at the bottom of the cab adopt bent plate structures and avoid a structure of utilizing a heavy steel plate as a mounting cushion block by a traditional cab, so that the cost is saved; and meanwhile, when the cab is mounted, only one bolt is punched from the lower side of the cab, so that the engineering machine cab is convenient to mount.