Abstract: The correlation analysis, the mean ± standard deviation method and principal components analysis (PCA) were used to evaluate the quality and seedling classification of Melaleuca leucadendron. cutting propagation, which were introduced and cultivated in Qianwei County, Sichuan province. The results showed that (1) the seedling quality might be evaluated by the seedling height (H), ground diameter (D) and the plant biomass as the phenotypic indexes. Moreover, some indices such as the main root number and the root length were subsidiary index for evaluating the quality. (2) The seedling height and ground diameter were put forward as the quality indexes of seedling classification of this tree species, and the three grade classification standards of Melaleuca leucadendron. cutting propagation were obtained. Grade I seedlings: seedling height＞17.66 cm, ground diameter＞1.98 mm; Grade II seedlings: the seedling height was 11.48–17.66 cm, the ground diameter was 1.36–1.98 mm; Grade Ⅲ seedlings: the seedling height＜11.48 cm, ground diameter＜1.36 mm. The results could provide some theoretical basis for the classification and screening of Melaleuca leucadendron. seedlings.