The field experiments were carried out to study the effect of filmcovered and potassium fertilizer on absorption rate of Se fertilizer and Se absorption and distribution of potato(ZiHuabai).The experimental results were as follows:The yield of whole plant and tuber were improved evidently by filmcovered and potassium fertilizer.Meanwhile,Applying potassium improved se concentration and accumulation in whole plant and tuber.potassium and selenium make the Secontents of tuber come to Seenrichded level at 0148 mg·kg-1.The interaction was positive effect.In harvest stage,the absorption rate of Se in whole plant and tuber was respectively increased by 15 and 27 percentage point than potassium alone.Seconcents in whole plant and tuber and accumulation in whole plant were distinct effect by filmcovered,but accumulation in tuber increased evidently.In harvest,the absorption rate of Se in whole plant and tuber was respectively increased by 22 and 31 percentage point through Se fertilizer and filmcovered.Filmcovered improved significantly Se to translate from stem and leave to tuber.In harvest stage,the translocation rate of filmcovered was 53 percent,which increased 101 percentage point.