In this paper,the main desert shrub species:Ammopiptanthus mogolicus,Tetraena mongolica,Zygophyllum xanthoxylum,Reaumuria songarica,Helianthemum songaricumshrub were taken as the research objects in west Ordos region,Inner Mongolia autonomous region,China.The average standard shrub harvest method was used and each part(branch,leaves and roots)biomass of shrub was measured in field.Shrub height(H )combined respectively by crown area(C )as CH and diameter (D )as D2 H was used as independent variable to establish the biomass model.The optimal models were selected according to the largest determination coefficient(R2),the smallest standard error of estimate(SEE )and significance level of Ftest.The results showed that the differences among the dry/fresh weight ratio of single shrub and the differences among parts of shrub reached a significant level(P<0.05).The differences among root-shoot ratio of five shrub species reached a significant level(P<0.05).The root-shoot ratio of five shrub species was respectively that Reaumuria songarica was 1.05,Zygophyllum xanthoxylum was 1.01,Helianthemum songaricum was 0.92,Ammopiptanthus mogolicus was 0.90,Tetraena mongolica was 0.49.The roots and branches were main contributors to total biomass of desert shrubs and the proportion of roots and branches biomass to total biomass reached above 80%.With the increase of root diameter class,the root biomass was increasing.The R~2 value of single shrub biomass models were all more than 0.85 and reached a significant level(P<0.05).The prediction accuracy of five desert shrubs'biomass models were good.The important basic data was provided by this research results and theoretical basics for the response of shrub productivity,carbon storage and carbon cycle to global climate changes in desert area of western China.