There are many clinical causes of bitterness in the mouth, and the treatment methods vary, so we need to carry out targeted treatment according to the specific causes, such as daily life conditioning, medication, periodontal treatment, etc. 1, daily life conditioning: mental stress, irregular life, smoking, alcoholism, etc. lead to bitterness in the mouth, and need to improve the causes. Maintain a regular routine, go to bed early and wake up early, drink more water, and drink chrysanthemum tea, honeysuckle tea, etc., and ensure the appropriate amount of exercise, avoid smoking, drinking alcohol, most of the bitter mouth symptoms can gradually reduce to disappear; 2, drug treatment: mouth bitterness if accompanied by gastrointestinal discomfort, irritability, depression and other symptoms, you can promptly consult the Department of Traditional Chinese Medicine, under the doctor’s diagnosis and guidance to take the corresponding Chinese medicine regulation, such as 3, periodontal treatment: If there is more calculus, soft scale, plaque, resulting in gingivitis, periodontitis, mouth bitterness, bad breath, etc., you need to go to the hospital stomatology department for periodontal treatment, including supragingival scaling, subgingival scraping, etc.; 4, pay attention to oral hygiene: mouth bitterness caused by poor oral hygiene conditions, in addition to periodontal treatment In addition to periodontal treatment, you should also learn to brush your teeth correctly, and rinse your mouth after meals. When brushing, pay attention to all the teeth should be cleaned in place, choose a toothbrush and toothpaste suitable for you.