The invention provides a large industrial double-cross-beam 3D printer and belongs to the technical field of digital machining. The large double-cross-beam industrial 3D printer aims at achieving the purposes of large-size design and quick integral forming, and overcoming the defects that a 3D printer of a common regular-size model is limited in printing space, and the forming speed is low. The modules such as a CNC and a laser engraving spray head are additionally arranged on a printer body, functions of the printer are enriched and expanded, and the printer can achieve multiple purposes. By developing the industrial-grade large-format FDM 3D printer, the blanks of large industrial product design forming and artwork design forming on the market can be filled, the process of design achievement can be greatly shortened through quick integral equal-proportion forming, the time and money cost is greatly saved, the printer is relatively low in cost, high in integrity and high in market popularization and practicality.