Ornidazole belongs to the nitroimidazole antibacterial drugs, mainly used in the treatment of Helicobacter pylori and other sensitive anaerobic bacteria, play the function of anti-infection, as follows: Ornidazole can be used to treat a variety of infectious diseases caused by sensitive anaerobic bacteria such as Digestive Coccus, Digestive Streptococcus, General anaplasmosis, Polymorphic anaplasmosis, Helicobacter pylori, Clostridium difficile, Gingival bacillus and other infectious bacteria, such as digestive system diseases (such as amebic dysentery), oral infections, such as periodontitis, periaplasmosis, abdominal infections such as intra-abdominal abscesses and so on, pelvic infections such as fallopian tube or ovary abscess, pelvic soft tissue infections, and so on. Ornidazole has adverse reactions such as stomach upset, dizziness, and rash. It is contraindicated for those who are allergic to ornidazole, those who have brain and spinal cord lesions, etc. It is recommended to use the medication under the guidance of a doctor, and not to blindly use the medication on your own, so as to avoid any adverse effects.