Considering　the　high　environmental　risk,　the　remediation　of　antibiotic　pollutants　attracted　numerous　attentions.　In　this　work,　a　novel　photocatalyst,　Ce0.9Zr0.1O2/SnIn4S8,　was　fabricated　by　in　situ　precipitation　and　hydrothermal　method　and　then　applied　to　the　degradation　of　norfloxacin　under　the　irritation　of　visible　light.　The　SEM,　TEM,　XRD,　XPS,　and　electrochemical　results　clearly　showed　that　the　n-type　heterojunction　between　Ce0.9Zr0.1O2　and　SnIn4S8　was　successfully　constructed,　which　greatly　reduces　the　recombination　of　the　photogenic　electron　and　holes,　leading　to　the　improvement　of　photocatalytic　performance　and　stability　(recycled　over　eight　times).　Besides,　the　Ce0.9Zr0.1O2/SnIn4S8　composite　also　exhibited　good　ability　to　mineralize　norfloxacin.　Under　the　optimal　condition　(pH　3,　1　g　L-1　of　10%　Ce0.9Zr0.1O2/SnIn4S8,　and　8　mg　L-1　of　initial　norfloxacin　concentration),　norfloxacin　could　be　fully　and　rapidly　degraded　in　60　min,　and　completely　mineralized　in　4　h　(99.3　+/-　1.7%).　LC-QTOF-MS　results　evidently　displayed　eight　intermediates　during　norfloxacin　degradation.　In　addition,　with　the　attack　of　the　reactive　oxygen　species　(h(+),　center　dot　OH,　and　center　dot　O-2(-)),　norfloxacin　could　be　effectively　decomposed　via　deoxygenation,　hydroxylation,　and　carboxylation　reactions.　Notably,　compared　to　photodegradation,　the　photocatalytic　process　could　completely　eliminate　the　norfloxacin　from　water　because　it　could　avoid　the　accumulation　of　toxic　byproducts.