Chlorhexidine mouthwash should be accurately said to be compound chlorhexidine gargle, antibacterial and anti-inflammatory, inhibit the growth of bacteria, can be used for gingivitis and oral mucositis and other symptoms caused by bleeding gums, oral mucosal ulcers and other symptoms of adjuvant treatment. Compound Chlorhexidine Gargle is a kind of antibacterial medicine with antibacterial, anti-inflammatory and bacterial growth inhibiting effects, and the main ingredients are chlorhexidine gluconate and metronidazole. Among them, chlorhexidine gluconate is a disinfectant and antiseptic drug with stronger antibacterial effect on gram-positive and negative bacteria. And metronidazole can resist anaerobic bacteria such as Clostridium perfringens, fungi, etc. It can directly act on the DNA metabolism process of bacteria and kill them. Compound Chlorhexidine Gargle can be used to assist in the treatment of gingivitis, oral mucositis and other diseases caused by bleeding gums, oral mucosal ulcers and other symptoms, can help the disease recovery. Some patients occasionally see allergic reactions or superficial flaking of oral mucosa. Prolonged use may cause patients with oral mucosal surface and teeth coloring, yellowing of the tongue and changes in taste. Specific use of the drug, patients are recommended to use under the guidance of a doctor to avoid discomfort to the oral cavity.