Direct　conversion　of　CO2　with　renewable　H2　to　produce　methanol　provides　a　promising　way　for　CO2　utilization　and　H2　storage.　Cu/ZnO　catalysts　are　active,　but　their　activities　depend　on　the　preparation　methods.　Here,　we　reported　a　facile　mechanical　grinding　method　for　the　fast　synthesis　of　Cu@zeolitic　imidazolate　framework-8　(ZIF-8)　derived　Cu/ZnO　catalysts　applied　in　CO2　hydrogenation　to　methanol.　The　confinement　in　ZIF-8　cages　led　to　the　formation　of　metal　oxide　particles　with　controlled　crystallite　sizes　after　pyrolysis　in　air.　ZnO　derived　from　ZIF-8　with　ultrahigh　specific　surface　area　offered　high　CuO　dispersion,　obtaining　higher　Cu0　surface　area　and　smaller　Cu　crystallite　size　after　reduction.　The　effects　of　the　Cu/(Cu　+　Zn)　molar　ratio　and　alcohol　types　during　catalyst　preparation　on　the　textural　properties　of　final　catalysts　were　systemically　studied.　The　resultant　catalyst　exhibited　high　activity　with　STY　of　methanol　up　to　128.7　g　kgcat-1　h-1　at　200　degrees　C,　much　higher　than　that　of　catalysts　prepared　by　the　conventional　impregnation　and　coprecipitation　methods　and　commercial　Cu/ZnO.　The　present　work　offers　an　efficient　method　for　optimizing　Cu/ZnO　catalysts　for　CO2　hydrogenation　to　methanol.