Titanium materials have limited applications due to their complex manufacturing processes and high costs. This study aims to explore the evolution laws of microstructure and properties during the direct rolling of sponge titanium sheets. Industrial grade 0A sponge titanium was used in the experiment. After being compacted and sealed - welded, it was longitudinally hot - rolled multiple times at 900°C to prepare 25 - mm, 10 - mm, and 4 - mm rolled plates, and metallographic analysis, tensile property testing, and fractographic analysis were carried out. The results show that after the first hot - rolling pass, the middle part of the sponge titanium compact is dense while there are voids at the edges. As the cumulative reduction increases, the hardness of the rolled plate increases, the density increases, the pore area decreases, the cladding thickness becomes thinner and the interface between the cladding and the compact begins to bond in some areas. Meanwhile, the grains are refined, the yield strength and tensile strength increase significantly, reaching 304 MPa and 338 MPa respectively, and the elongation after fracture first increases and then decreases, with a maximum of 32.0%. The mechanical properties of the plates prepared by this process are similar to those of plates made by the traditional melting - rolling process, but with slightly higher strength and lower plasticity. This research provides a theoretical basis for the direct rolling technology of sponge titanium, yet further research is needed to improve the yield rate and achieve mass production.