Micro-nano　hierarchical　metal　oxides　offer　unique　advantages　over　traditional　compact　ones　when　serving　as　electrode　materials,　mainly　because　their　good　electrolyte　wettability　and　high　specific　surface　area　can　facilitate　fast　ion　and　electron　transfer.　Herein,　we　develop　a　facile　route　to　fabricate　micronano　hierarchical　NiO　films　for　achieving　enhanced　bifunction　of　electrochromism　and　energy　storage.　The　introducing　of　hierarchical　structure　effectively　reduced　the　ion　diffusion　resistance　and　electron　transfer　resistance.　As　a　result,　hierarchical　NiO　films　demonstrate　superior　electrochromic　optical　modulation　and　electrochemical　energy　storage　compared　with　the　compact　ones.　The　transmittance　change　between　the　coloration　and　bleached　states　reaches　64.5%　at　550　nm.　Furthermore,　the　capacitance　of　hierarchical　NiO　is　14.85　F　g(-1)　at　0.2　mA　cm(-2),　which　is　approximately　20%　higher　than　that　of　the　compact　NiO　(12.36　F　g(-1)).　This　work　provides　an　efficient　way　to　prepare　high-performance　hierarchical　NiO　films,　which　can　be　extended　to　the　fabrication　of　other　metal　oxides　for　wide　applications　in　the　highly　efficient　electrochemical　utilization.