Abstract: The distribution of Kell--and Rh-blood groups in 201 mongols is reported.The results showed that the gene frequency of K--gene(0.9925)accords with that of whole people of China. In the system of Rh blood group, CCDee is the most(35.32 %). The next are CCDEe, CcDEE, and CcDee = ccDEE (19.9%, 16.42 %and11.94% ). The least are ccDEe and ccDee = ccdee (2.49% and 0.99% ). The chromosome frequenies are CDe (0.5943) > cDE (0.2983) > cde (0.0995) > cDe(0.0079) > Cde = cdE = CDE = CdE (Zero). The gene frequeneies are D(0.9005)> d(0.0995); C (0.S943) > c(0.4057); e(0.7017) > E(0.2983). The observed values coincide well with the expected values of Hardy- -weinberg test (X^2= 0.2346, P> 0.05). Comparing the frequency of CDe with that of other minority nationalities, the authors divide the ethnic groups in China into seven classes accordingto the distribution of Rh blood group, the Mongol belongs to class 4.

Key words: Mongol nationality; Kell blood group; Rh blood group; Chromosome frequency; Gene frequency