The method of agar diffusion was used to investigate the bacteriostasis of extracts from the leaf of Zanthoxylum bungeanum in different concentrations,temperature and pH.The results showed:(1)The different concentration extracts all had the antibacterial effect,but the higher concentration,the more significant effect.(2)Temperature had little effect on bacteriostasis.(3)The significant antibacterial effect showed that the level of pH=7.0~10.0.(4)The extracts had significant effect on Gram-positive bacteria(...