Abstract: Genotypic stability and grown adaptability of 11 clones of Paulcwnia that were six years old at five site were analysed using both of Eberhart-Russell model and Tai's structural model. Variance analysis indicated that the clone effect, site effect and clone x site interaction effect are great significant. Grown adaptability and genotypic stability indexes of paulownia clones were estimated using the regression coefficient (b) and deviation from regression mean square (Sd2) of E & R model, the structural analysis parameters â and λ of Tai's model. The results for analysis of stability and adaptability from two ways are similar.Clones were evaluated based on the genotypic stability and grown adaptability.