Three PGPB（Bacillus amyloliquefaciens GN03，Bacillus pumilus RP01 and Bacillus circulans JK02）isolated from purple soil were mixed as a complex bacterial inoculant. A pot experiment was conducted to examine the effects of the complex inoculant on ginger germchit. The results indicated that the treatment of
complex inoculant mixed with cow-dung（T2）had the best performance. Comparing the treatment of commercial bio-fertilizer（CK2），the treatment mixed with cow-dung remarkably increased the numbers of azotobacter，P-solubilizing and K-solubilizing bacteria by 1 674.1%，8 709.1% and 225.2%，respectively. Soil available P and K of the T2 were significantly enhanced by 87.5% and 23.0%，respectively. The tillering numbers，leaf areas，dry weight of shoot and root were increased by 40.0%，45.9%，28.6% and 25.0% under T2，respectively.Applying appropriate PGPB complex microbial inoculant can efficiently improve the micro-ecological environment and promote the growth of ginger germchit in purple soil.