Gum odor can be improved by scaling, medication and other means depending on the cause. 1. Dental scaling: Gum odor is considered to be caused by bad oral hygiene, tartar and plaque. Dental scaling can be used to remove tartar and plaque, delay plaque and tartar redeposition, and reduce gum odor. 2. Medication: smelly gums may be the cause of apical periodontitis, root canal treatment is needed to control inflammation and relieve smelly gums, while taking medication as prescribed by the doctor, such as ornidazole tablets, tinidazole tablets and other drugs to eliminate inflammation. 3. Other ways: smelly gums, need to pay attention to maintain oral health, regular daily brushing, rinsing after meals, clean between the teeth. Regular oral health checkups, dental scaling care. If the symptom of smelly gums is more serious, you should consult a doctor in time to avoid self-medication.