Abstract:The karyotypes of 14 species and 2 varieties of Aloe L.were reported.The results of karyotype analysis are as follows: all species studied here in the genera have a single basic chromosome number(x=7),diploidy and a large strongly bimodal karyotype always comprising three short chromosomes and four much longer ones in the haploid set.According to Stebbins’criterion for classification of chromosome karyotype,the karyotypes of the species belong to ‘3B’,‘4B’,‘3C’ or ‘4C’.Karyotypes of 6 species and 1 variety were firstly reported.Otherwise,we had discussed its systematical implication in Aloe L.