Garlic taste in the mouth can be caused by gingivitis, acute gastroenteritis, oral cleaning is not in place and other causes. It is recommended that further examination in the hospital to clarify the cause of the disease, the cause of reasonable treatment. 1. Gingivitis: Gingivitis can make people’s gums bleed, swelling, odor in the mouth and other uncomfortable symptoms. It is recommended that people use medication (such as hydrogen peroxide rinsing, oral metronidazole, etc.) under the guidance of a doctor. 2. Acute gastrointestinal diseases: when people suffer from acute gastritis, acute cholecystitis and other diseases, abdominal pain, vomiting, bad taste in the mouth and other symptoms. Some people will have a garlic odor in the mouth. It is recommended to seek medical treatment. 3. Oral problems: when people do not clean their mouths properly, they will also have garlic odor in their mouths because they have eaten garlic. It is recommended that people avoid discomfort such as late nights and alcoholism in their daily lives. Pay attention to oral cleaning, and seek medical treatment when necessary.