Bazheng San mainly contains eight kinds of drugs, such as Qu Mai, Che Qian Zi, Bian Cao, Da Huang, Slippery Rock, and Chuan Mu Tong, etc. It is mainly used to clear heat, diuretic and laxative effects. It is mainly used for patients with damp-heat injection, whose main symptoms include short, red urine, dripping and astringent pain, as well as dry mouth and dry throat. In modern research, this drug has good antibacterial, diuretic, antipyretic, anti-inflammatory and analgesic effects, and it has good inhibitory effects on some common pathogenic bacteria that cause urinary tract infections, such as Escherichia coli, Staphylococcus aureus and Streptococcus. However, it should be noted that patients with intestinal obstruction, patients with colorectal nigra, and women during pregnancy are prohibited, and patients with diarrhea are cautiously used, because it contains rhubarb, so this drug should not be used in large quantities for a long time, it may lead to colorectal nigra.