The invention discloses a steel slideway beam device for modular combined type translation. The steel slideway beam device comprises a counter-force foundation and a slideway beam group arranged on the counter-force foundation, the slideway beam group is composed of slideway beams, the slideway beams are fixedly connected through connecting components, between the counter-force foundation and theslideway beams is filled with gap material layers, the slideway beams can be lengthened longitudinally, widened laterally and heightened in height, and the slideway beams adopts steel materials. According to the steel slideway beam device for modular combined type translation, (1) modular fabrication can be achieved, requirements of different projects for different sizes of lower slideway beams are met, and the effect of reuse is achieved; (2) fabrication in advance can be achieved, maintenance is not needed, and the whole translation period is saved; (3) construction waste is not produced, and environmental protection is facilitated; and (4) under the support state of an existing structure, construction is convenient in a narrow space, and compared with concrete lower slideway beams, theconstruction speed is high.