The　continuous　emissions　of　volatile　organic　compounds　(VOCs)　from　the　industrial　process　cause　serious　environmental　problems　and　pose　a　threat　to　human　health.　Photodegradation　technology　and　biofiltration　technology　are　efficient　to　control　VOCs　emissions.　Recently,　the　researches　on　combined　photodegradation　and　biofiltration　technology　have　been　attractive,　since　it　could　overcome　the　challenges　in　the　application　of　the　separated　technologies,　such　as　toxic　by-product　emission,　excess　biomass　accumulation,　and　shock　loading.　However,　no　review　has　published　to　report　the　development　of　the　combined　technology　comprehensively.　In　this　paper,　the　challenges　of　the　separated　photodegradation　and　biofiltration　technology　in　treating　VOCs　are　documented　firstly.　Then,　the　advantages　of　the　combined　technology　are　illustrated　by　comparing　with　the　separated　photodegradation　and　biofiltration　technology,　respectively.　Finally,　the　interaction　mechanisms　between　photodegradation　and　biofiltration　are　also　discussed.　The　advantages　of　the　combined　technology　could　promote　its　application　in　practical　engineering.