Abstract:The karyotype of four Chinese scallions (Alliumchinensis G. Don) was studied. The results showed that the karyotype of blue scallion is 2n=4x=32=24m+8sm(SAT); Taoyuan scallion is 2n=4x=32=28m(SAT)+4sm; Lichuan scallion is 2n=4x=32=24m(SAT)+4sm+4st; and silk scallion is 2n=3x=24=21m+3sm. Meantime, according to the karyotype analysis, Classification of chinese scallions and problem of its blooming but rare seeding are discussed.