For the high-yield cultivation ofcelery，the growth promotion test of celery was carried out using Bacillus subtilis(BLG010)and Trichoderma viride(H06)，and the test was performed with distilled watertreatment，BLG010treatment，H06 treatment，and BLG010+H06 treatment.The results showed that BLG010 and H06 had synergistic -enhanced effecton promoting celery growth.In order to find out the reasons for the synergistic -enhanced effect of BLG010 andH06，thedefensive enzyme activity and metabolomics of celery wereanalyzed.The results of enzyme activity assay showed that bothBLG010 and H06 increased the CAT and POD activities of celery compared with distilled water treatment，and the CATand POD activities of BLG010+H06 treatment were higher than those of othertreatments.The results of GC -MS analysis ofmetabolomics showedthat，the contents of malicacid，mannitol and sucrose showed regular changes in differenttreatments.