Mycotoxins,　highly　toxic　secondary　metabolites　of　fungus,　have　brought　considerable　threats　to　human　health.　It　is　of　great　significance　to　develop　low-cost,　rapid　and　efficient　analytical　methods　for　monitoring　mycotoxins　in　foodstuffs.　Photoelectrochemical　(PEC)　biosensors　have　been　promising　tools　for　mycotoxin　detection　thanks　to　their　superior　properties.　Photoactive　materials　play　important　roles　in　the　biosensing　systems　as　transducer　converting　chemical　information　into　detectable　PEC　signal.　Signal　strategies　based　on　specific　recognition　elements　also　affects　a　lot　on　the　analytical　performance　of　PEC　biosensors.　This　paper　provides　a　comprehensive　review　on　photoactive　materials　and　signal　strategies　used　in　the　PEC　biosensors　for　mycotoxin　monitoring.　The　future　prospects　in　this　field　are　also　discussed.　©　2020　Elsevier　B.V.