What should I do if I have bad breath? First of all, face it openly, do not have low self-esteem or stress, because all individuals who eat grains and cereals have the possibility of suffering from bad breath, only the time and degree are different. Secondly, you should not take it seriously, but actively treat it to eliminate bad breath and restore a healthy, sunny and happy you. Now, take a moment to think, have you been very busy lately? Is life regular? Stay up late often? Do you drink enough water every day? Are you taking medication for an illness? Do your teeth bleed when you brush them? Do you have tooth decay? Look for, determine the cause of the disease, and treat it effectively for the cause. 1.Adjust your diet, avoid spicy and stimulating food, stop overeating; increase some knowledge of nutrition, drink enough water every day, don’t wait until you are thirsty. 2, regular life, try not to stay up late, sufficient sleep; strengthen physical exercise, enhance your physical fitness; reduce the occurrence of subhealth. 3, stomatological examination, exclude bad breath caused by dental and periodontal disorders. If there are cavities, tartar, bad restorations, etc., timely filling, cleaning and removal of bad restorations. And master the correct and effective brushing method; always remember to brush your tongue; choose the right toothpaste and mouthwash for you if necessary, and consult your dentist before use. 4.If there is indigestion, stomach pain, heartburn, nausea, etc., gastroenterology examination to exclude digestive system disorders. 5.If there are sinus, pharyngitis, tonsillar inflammation, stones, etc., ENT examination and active treatment. 6.If there is a systemic chronic disease, active treatment, and strive to minimize the amount of medication. 7, encounter occasions that may cause embarrassment, directly tell each other, recently did not take care of themselves, have to cover their mouths to talk; the other party must be relieved.