If the sternitis is caused by anaerobic bacteria, and there is no contraindication related to metronidazole is possible to take. Metronidazole has good antibacterial effect on anaerobic bacteria (e.g. Anabaena fragilis, Clostridium difficile, etc.), and is mainly applicable to the treatment or prevention of infections caused by the above anaerobic bacteria. Common sites of infection by anaerobic bacteria include the abdominal cavity, digestive tract, reproductive system, respiratory tract, skin and soft tissues, bones and joints. Sternitis can be divided into aseptic inflammation and bacterial inflammation, aseptic inflammation-induced sternitis does not need to take metronidazole, at this time can be symptomatic treatment, taking anti-inflammatory and analgesic drugs. However, sternitis is caused by localized infectious lesions, especially those caused by anaerobic bacteria, then it can be treated and controlled with metronidazole. It is contraindicated in patients with active central nervous system disorders, blood disorders, hypersensitivity to the components of metronidazole, and should be used with caution in pregnant and lactating women. After taking metronidazole, it is also necessary to observe the liver and kidney function in time to avoid liver and kidney damage. Taking metronidazole, need to follow the doctor’s instructions, not blindly self-medication.