RESULTS: Results of the score plots showed that the metabolites in the three BALF samples were clearly separated in the quadrant, it was explained there were significant differences among the groups on metabolites. According to the VIP results, the decreasing order of the VIP values was glycine, galactose, palmitic aci, ribitol, aspartate and stearic acid. The variables glycine and galactose had more contributions to the classification. The results of Hierarchical Clustering showed that the blank control group, model group and Recuperating Lung formula group could be distinguished well. A total of 7 kinds of metabolite were detected from the BALF of rabbits: glycine, aspartate, ribitol, galactose, palmitic acid, myristate and stearic acid. One-way ANOVA analysis showed: the metabolites glycine, aspartate, galactose and myristate were different among the three groups.