The causes of bad breath are many and varied, and the effective way to remove bad breath is to identify the causes and carry out targeted treatment. 6 tips to completely remove bad breath is not scientifically based, can not be applied to all cases, and can not be “completely removed”. Removing bad breath should be based on the cause of the bad breath, through the prescription can not fundamentally improve bad breath. Generally speaking, bad breath can be relieved by not eating smelly food, brushing and rinsing your teeth, and other daily behaviors. However, if it is caused by a disease, the original disease needs to be cured in order to improve or cure bad breath. 1. The most common cause of bad breath may be related to oral diseases. If you suffer from dental caries, or usually do not pay attention to oral hygiene, especially prone to food residue retention, due to food residue corruption is prone to bad breath symptoms, can be improved by cleaning teeth. In addition, if there are dental caries, you need to go to the hospital dentistry for treatment. If there is periodontitis, deep caries, etc., need to carry out periodontal treatment or filling treatment. 2. Bad breath can also be related to indigestion. If you suffer from indigestion, it will cause food to remain in the gastrointestinal tract for a longer period of time, and there will be a foul odor after the food has fermented. It can be improved by using medication that promotes gastrointestinal motility, such as mosapride, as prescribed by your doctor. Bad breath can also be caused by other reasons, and it is recommended to go to the hospital to find out the cause and receive treatment.