Silicon materials have attracted wide attention as negative materials due to exceptional gravimetric capacity and abundance.The strategy of using nano-silicon mate-rials as structural units to construct nano/micro-structured silicon-based negative materials for lithium-ion batteries has come into sight in recent years.In order to provide guidance for the material structure design of micro-sized silicon-based negative materials in practical application,in this work,two commercialized nano/micro-structured sili-con-based negative materials with a specific capacity of about 650 mAh·g-1 were investigated and compared in the aspects of material microstructure,electrochemical per-formance of half cells,and electrode morphological evo-lution during cycling.The cycling performance(with capacity retention ratio of about 17％higher after 100 cycles)and electrode structure maintenance of the embedded structure Si/C material are superior to those of core-shell Si/C material.This research can provide guid-ance on design and application of nano/micro-structured silicon-based negative materials.