Monofilament and multi-filament drawing processes play important roles in the manufacture of Bi-based high-temperature superconductor (HTS) tapes. In order to investigate the deformation behavior of superconducting powder, the theoretical derivation was used to analyze the drawing process of the single filament superconductor wire, and a relationship between processing parameters and powder density was determined. The experiments were applied to verify the feasibility and effectiveness of the derivation. Also, the large cross-section reduction drawing technique was employed to optimize the process and to achieve advanced energy-saving forming. For 61-filament Bi-2223/Ag wire with a diameter of 1.86 mm, the Vickers hardness of the powder cores was measured, and the finite element model of the drawing of the multi-filament superconductor wire was established. It is found that the powder density of different filaments is of inhomogeneous distribution, especially the large fluctuation in the radial distribution for layers of filaments during process, which will directly affect the ultimate quality of tapes. Meanwhile, the Gradual Racetrack-type Tri-pass Drawing process was developed to fabricate Bi-2223/Ag tapes. The experimental results show that the Racetrack drawing can increase the critical current of HTS tape by 10.1%.