Bad breath, eat some hawthorn and other sour fruits can increase saliva secretion, moisturize the oral cavity, enhance the self-cleaning function of the oral cavity, but also can help digestion, remove the accumulation of food, it is good for relieving bad breath. However, eating hawthorn alone cannot completely cure bad breath, because bad breath is caused by multiple reasons. If bad breath is caused by stomach fire, indigestion, dysfunction of spleen and stomach, or stomach qi is not descending, it is necessary to regulate the spleen and stomach, hawthorn can be used as a dietary therapy to assist, and if the effect is not obvious, it can be taken orally with Huo Xiang Qing Gastric Capsule. However, if the bad breath is caused by gingivitis, periodontitis, or dental caries or dentures, hawthorn is ineffective. You should actively treat periodontal disease, remove plaque and calculus, brush your teeth carefully, and maintain oral hygiene to get rid of bad breath.