Taking　into　account　the　environmental　noises　and　Allee　effect,　we　develop　a　regime　switching　model　for　a　single　species,　and　then　we　consider　dynamics　of　species　population,　such　as　persistence,　ergodicity　and　global　attractivity.　More　precisely,　firstly　we　prove　the　global　existence　of　the　positive　solution,　and　then　study　the　extinction　of　species,　non-persistence　in　mean,　persistence　in　mean　and　stochastic　permanence.　It　is　followed　by　the　study　of　positive　recurrence,　ergodicity　and　the　global　attractivity.　Finally,　we　conclude　our　study　by　a　numerical　example　and　discussions.　(C)　2019　Elsevier　B.V.　All　rights　reserved.