Bi-based 2223 superconducting tapes with high critical current densities were prepared by silver-sheathingmethod.The relationship between processing,microstructure and property was discussed.The results of criti-cal current density measurement at 77.7 K with different applied magnetic field are as follows:j_e=2.87×10~4A/cm~2(OT),J_e=4100 A/cm~2(H I.H||S.1T)and J_e-B characteristics are obviously improved withtemperature decreasing from 77 K to 4.2 K.Microstructtlre observations indicate that intermediate pressingwith subsequent heat-trcating could lower the porosity of superconductor inside the silver sheath,and reducethe amount and size of non-superconducting phases,leading phases,leading to the formation of a strong c-axis-orientedtexture,and the emergence of high dislocation density within the 2223 grains,and consequently the J(?)andJ_e-B characteritics were improved. Bi-based 2223 superconducting tapes with high critical current densities were prepared by silver-sheathing method. The relationship between processing, microstructure and property was discussed. The results of criti-cal current density measurement at 77.7 K with different applied magnetic fields are as follows: J_e = 2.87 × 10 ~ 4A / cm ~ 2 (OT), J_e = 4100 A / cm ~ 2 (H IH || S.1T) and J_e-B characteristics are significantly improved with decreasing temperature from 77 K to 4.2 K. Microstructures显示 显示 全部 标准 的 显示, 显示 显示. 显示 显示. [a of high dislocation density within the 2223 grains, and due the J (?) and J_e-B characteritics were improved.