Kilogram-scale micro-nano SrVO3 powder was produced with the sol-gel method combined with hydrogen reduction and heat treatment. Then SrVO3 bulks were prepared by cold pressing and sintering the sifted powders using different mesh sizes (unsifted powder, 100 mesh, 200 mesh, and 300 mesh). The thermal stability of SrVO3 powder and bulks under air was investigated, and the effects of powder granularity sifting on granularity and distribution of their raw material, bulk grain size, and electrical conductivity were also evaluated. The results show that: SrVO3 bulk has better thermal stability in air than SrVO3 powder; the temperature at which oxidative weight increase occurs is enhanced from 335 °C for the powder to 430 °C for the bulk. The mean particle size of the raw material powders decreases, the electrical conductivity of the related cold-pressing sintering bulks is significantly raised, and the conductivity of the powders rises with increasing granularity sifting mesh. Granularity sifting can be used to acquire smaller and more uniform powder raw materials, which will increase the density of the bulks produced by cold-pressing sintering. Furthermore, the material’s more effective routes for the conduction of electric charge are established and the conductivity of the prepared SrVO3 bulk reaches 20,000 S/cm, which is 37% higher than that of the bulk produced by unsifted powder. Granularity sifting is essentially the optimization of the raw material’s particle size. More sifting of the SrVO3 powder’s particle size is expected to yield improved bulk material performance, providing the foundation for its use in transparent conductive films, semiconductor devices, sensors, and other areas.