In this work, (Bi, Pb)₂Sr₂Ca₂Cu₃O_10+δ superconducting nano-network was successfully synthesized based on liquid-phase method via electrospinning and followed calcinations. The effect of plumbum (Pb) replacing bismuth (Bi) and the superconductivity of Bi_2-xPb_xSr₂Ca₂Cu₃O_10+δ (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.45) nano-networks were studied. With the increase of the ratio of Pb, it was found that the relative volume fraction of the Bi-2223 phase increased from 53.50 to 93.98%, the pinning force increased from 0.66 × 10⁸ N m⁻³ to 3.22 × 10⁸ N m⁻³, and the critical current density increased from 0.98 × 10⁸ A m⁻² to 4.71 × 10⁸ A m⁻². By fitting the dominant magnetic flux pinning mechanism, it was also found that the addition of Pb can improve the pinning center of Bi-2223 phase. These results indicate that the addition of Pb is beneficial to improve the fraction of superconducting Bi-2223 phase. The optimal superconductor pinning structure has been obtained because the pinning centers are created by substituting Pb for Bi.