Abstract: The present invention relates to a method of electrostatic spinning to prepare self-supported anode material of tin phosphide/carbon black nanofibers and its application, and the resulting anode material will be applied in the field of lithium-ion battery technology. Polymer, carbon black and tin phosphide nanoparticles are added to organic solvent, and the solvent is stirred to get colloidal solution; the tin phosphide/carbon black composite material is obtained by electrostatic spinning method, and the phosphide tin/carbon black nanofiber self-supporting anode material is obtained after a simple pre-burning and carbonization process. The method is simple, short production cycle, good product uniformity can be applied to industrial production. The invention is applied to lithium-ion battery anode material after 300 cycles at a current density of 0.5 A/g, and its reversible capacity is maintained at 528 mAh/g.