Metronidazole is also known as metronidazole, metronidazole, metronidazole, and metronidazole. The chemical name is: 2-methyl-5-nitroimidazole-1-ethanol. Metronidazole is white or slightly yellow crystal or crystalline powder; it has a slight odor, a bitter and slightly salty taste. There are many medicines containing it as its main ingredient. Different medicines are suitable for different groups of people. Metronidazole drugs are mainly anti-amoebic drugs, anti-trichomoniasis drugs, and anti-anaerobic drugs. It has broad-spectrum anti-anaerobic and anti-protozoal effects. It is mainly used clinically to prevent and treat infections caused by anaerobic bacteria, such as infections of the respiratory tract, digestive tract, abdominal cavity and pelvic pus, infections of skin and soft tissues, bones and bone joints, and fragile pathogens. endocarditis, septicemia, and meningitis caused by Bacillus. In addition, it is also widely used to prevent and treat oral anaerobic bacterial infections.