A　novel　spindle　hierarchical　ZnO　was　grown　on　ITO　glass　substrate　via　a　solvothermal　process　and　subsequent　calcination　treatment.　The　core　of　the　hierarchical　structure　is　a　bundle　of　nanorods,　and　the　bundle　is　wrapped　by　a　nano-ring　and　put　on　a　＂sarong＂　formed　by　nanoparticles.　This　ZnO　hierarchical　structure　has　good　photocatalytic　activity　and　gas　sensitivity,　its　degradation　rate　to　rhodamine　B　is　twice　that　of　ordinary　ZnO　powder,　and　response　sensitivity　to　100　ppm　acetone　gas　is　as　high　as　48.1,　which　is　11　times　as　that　of　ordinary　ZnO　powder.