The genus of Eremopyrum was established in 1851s.After the morphylogical taxonomy studies in 1930s and cytological researches during 1950s～1960s,the status of the genus was admitted and the species under this genus were identified.However,there are still some taxonomy problems existing.Some species have been hybrized with 8 taxa belonging respectively to 6 genera,including common wheat.The results show that Eremopyrum has a distant evolution relationship with these all.