There is no best way to get rid of bad breath, bad breath may be related to oral diseases, gastrointestinal diseases and other factors, you need to understand the bad breath and then symptomatic treatment. 1. Oral disease, if there are caries, periodontitis, mouth ulcers and other oral diseases may lead to bad breath, you need to consult a doctor in time for examination and treatment. For example, if the caries can be filled in time to remove the residual material. 2. gastrointestinal diseases, patients with gastrointestinal diseases may also lead to bad breath symptoms, such as gastritis, gastric ulcer, duodenal ulcer and other diseases may appear after this reaction, need to actively seek medical attention. If you have gastritis, you can use omeprazole, lansoprazole, domperidone and other drugs under the guidance of the doctor. Usually also need to keep the oral cavity clean, diligent brushing and rinsing.