Objective To observe the antibacterial effects of Qiaoqinqingfei traditional Chinese medicine decoction and herbal concentrate-granules on Staphylococcus aureus (SA) and Acinetobacter baumannii (AB) in vitro. To assess the different antibacterial effects in vitro between them. It would provide a new idea and scientific basis for the clinical application of Qiaoqinqingfei Formula. Methods The KB test paper diffusion method and modified liquid dilution method were used to observe the minimum inhibitory concentration (MIC) of Qiaoqinqingfei traditional Chinese medicine decoction and herbal concentrate-granules on the Staphylococcus aureus ATCC25923 and Acinetobacter baumannii ATCC19606. Results The MIC of SA and AB in the two form of Qiaoqinqingfei were 1.38 g/mL (P<0.01) and 2.75 g/mL(P<0.01) by the KB test paper diffusion method. The MIC of SA and AB in herbal concentrate-granules of Qiaoqinqingfei were10.0 g/mL (P<0.01) and 5.5 g/mL (P<0.01) by the modified liquid dilution method. And the MIC of SA and AB in decoction both were 5.5 g/mL (P<0.01) in traditional Chinese medicine decoction of Qiaoqinqingfei. Decoction was better than granules (P<0.01). Conclusion Traditional Chinese medicine decoction and herbal concentrate-granules of Qiaoqinqingfei may both effectively inhibited the growth of SA and AB. The bacteriostatic effect of decoction was better than decoction-free granules. The bacteriostatic effect of AB was weaker than Staphylococcus aureus, but there was no significant difference between them.