Pollen viability was determined by solid media law,The pollen germination and pollen tube growth ofKuijinwas comparative researched by media components,The most suitable medium for pollen germination and pollen tube growth are respectively 10%sugar +0.1%boric acid and 5%sugar + 0.01%boric acid;According to the self pollination rate 0%proofKuijinapricot for self-incompatibility,combined with pollen weight and pollen amount,Kuijinapricot explore the reasons for the low rate of self-pollinated.The results showed that: Self-pollinat rate and pollen tube length most closely onKuijinapricot,no direct correlation with pollen amount.