Carbon-composting is considered as most promising strategy for high-performance anodes of alkali metal ion batteries in viewpoint of improving electric-conductivity and alleviating volume expansion. Spatial distribution of active material in carbon-composting anodes should play a vital role in electron/ion migration, SEI-film growth and stress relief upon ion insertion/extraction. Herein, spatial distribution of MoSe2 in MoSe2/C composites is regulated by controlling the concentration of precursor solutions. Interestingly, uniform distribution of MoSe2 in carbon framework seems to exhibit better cycling-stability than either core-rich MoSe2 or shell-rich MoSe2 composites. In contrast to the suppressed K-ion kinetics in core-rich MoSe2 and the surface cracking in surface-rich MoSe2, homogeneous MoSe2-distribution in MoSe2/C is beneficial for local stress relief, enhanced K+-ion migration and stable SEI-film evolution upon cycling. We believe that the strategy based on spatial distribution of active material in composite would provide novel insights on exploration of high-performance anodes modified with carbon.