Busy “office workers” often ignore the oral discomfort transmitted by the body disease signals. When people have four oral discomfort conditions should be noted. Signal one: constantly drink water but still dry mouth may be the cause of diabetes. There are many reasons for dry mouth, such as smoking, drinking alcohol, etc. But it is worth noting that dry mouth may be caused by diabetes. However, it is worth noting that dry mouth is also one of the early symptoms of diabetes. Diabetes belongs to the metabolic system diseases, mainly expressed as eating more, drinking more, pulling more “three more” and weight loss “one less”, but also can cause the salivary glands blood vessels thicken, slowing down the secretion of saliva, which leads to thirst, dry mouth, etc.. Signal two: grinding your teeth at night means you really should rest. Old people often say that grinding teeth is a “roundworm in the belly”, but in fact, grinding teeth has a “complex mechanism”. People’s upper and lower teeth bite is very precise, once the bite is not accurate nerve will be fine-tuned to produce teeth grinding, therefore, grinding teeth at night is often emotional changes or psychological stress performance. Patients who grind their teeth at night should promptly consult a professional dentist for a customized splint to prevent teeth grinding. Signal 3: Bad breath, remember to check the stomach and liver. Bad breath can be produced by worm teeth, food residue retention, periodontal disease, etc. Some people brush their teeth every day but still have bad breath, which may indicate problems in other parts of the body, such as stomach dysfunction, indigestion and liver disease. Gastrointestinal tract dysfunction, dysbiosis, the gas produced into the mouth will cause bad breath. Signal four: three “touch” self-test mouth ulcers heavy and light. Mouth ulcers are very common, many people tend not to take it seriously. I do not know, mouth ulcers that do not heal over time may be “dragged” out of the big problem. Three “touch” self-test method: touch their lips, nose tip, forehead, if the hardness of the ulcer surface and the lips is equivalent to light, and the tip of the nose is equivalent to the middle, and the forehead is equivalent to the need to see a doctor and further examination.