Hierarchically porous carbon materials, as one of the most important anodes for rechargeable batteries, have been extensively investigated. In this study, nitrogen and sulfur co-doped carbon nanosheets (NSCN) with hierarchically porous structure was prepared by chemical vapor deposition using magnesium hydroxide as the template. In the resultant architecture, the unique nanostructures of NSCN are characterized by the porous interlaced network with large specific surface area (674 m(2) g(-1)) and high heteroatom doping level (4.96 wt% for nitrogen and 3.01 wt% for sulfur). As an anode material for LIBs, NSCN exhibits significantly high reversible capacity of 1026.5 mAh g(-1) at 0.1 A g(-1), a good rate performance of 568.6 mAh g(-1) at 1 A g(-1), and outstanding cycling stability (564.9 mAh g(-1) after 800 cycles at 0.5 A g(-1)). When evaluated as the anode of SIBs, the NSCN anode also shows high reversible capacity and good rate performance. Remarkably, ultralong cycle-life stability was can be achieved for 10,000 cycles even at a high current density of 5 A g(-1), thus making it promising materials for the developing high-performance LIBs and SIBs.