Abstract: Some of the informations about heritability of partial quantitative character such as height and breast height diameter of Paulownia clones were collected from early clone test including 23 clones in two sites in different years. The results show that heritability of height in the first year, third and fourth year are 10%, 51% and 53%, and heritability of breast height diameter in the third and fourth year are 59% and 51% respectively. That means the early prediction should be carried out starting from the third to fourth year.