Bad breath can be removed by drinking water chestnut tea, bamboo leaf tea, single-flavor tea, chrysanthemum tea, green tea, osmanthus tea, loofah tea, which can cause halitosis for a variety of reasons: 1. If the halitosis is caused by indigestion leading to food accumulation, drinking water chestnut tea can help digestion, remove food accumulation and effectively get rid of bad breath. 2. 3, drink single-flavor tea, chewing tea can also remove bad breath because of excessive stomach fire. 4, chrysanthemum tea can clear the liver and eyes, antibacterial and anti-inflammatory, clear heat and drain fire, if the bad breath caused by excessive stomach fire can go to the root. 5, you can also drink mint tea, green tea, osmanthus tea, loofah tea, can effectively remove bad breath, bad breath patients usually need to eat light The patient should pay attention to oral hygiene.