When the human body is in a “sub-healthy state”, it often has the following manifestations: 1) Heart disease and restlessness, palpitations and little sleep: The main manifestations are panic and shortness of breath, chest tightness and breathlessness, distraction and confusion, panic and confusion, sleeplessness at night and dreams. 2. sweating and frequent colds: frequent spontaneous sweating, night sweating, false sweating, cold and fear of cold if one is not careful. 3.Red tongue, thick and greasy tongue coating, bitter mouth, dry throat, dry stool, short and red urine, etc. 4.Facial stagnation, gray around the eyes: the face is colorless and emaciated; around the eyes, especially under the eyes, gray and blue. Some middle-aged and elderly women have swollen ankles and calves in the morning or after exertion, and swollen and sagging lower eyelids. 6, nail imaging, abnormal changes: Chinese medicine believes that the human trunk and limbs, internal organs and meridians, qi and blood body energy information overlapping fusion in the nail image called nail image. If the nail appears rolled like onion tube, similar to garlic, peeled like bamboo shoots, withered like fish scales, curved like eagle claws, collapsed with deflated snail, moon marks are not uniform, peak concave residue, nail surface white spots, etc., are 14 nail image abnormalities, the location of the disease or in the viscera, or involved in the meridians, Ying Wei blockage. 7, chest distension before menstruation, breast nodules: two or three days before the arrival of menstruation, women’s limbs swell, chest distension, chest pain, gynecological examination, there are often hard nodules in the breast, should be given special attention. 8, vomiting mucus, erratic bloating: often have chest and abdominal bloating, sticky stool, anal dampness and heat, eating cold and dry food often feel stomach discomfort, sticking in the mouth, vomiting as soon as possible. In the case of heavy, morning vomiting is inevitable and progressive aggravation. At this time, the stomach and esophagus should be promptly checked for occupying lesions. 9. abnormal body temperature, tiredness and weakness: body temperature in the afternoon is often about 37-38°C, palms are hot, mouth is dry, and the whole body is tired and weak, you should go to the hospital to check whether there is tuberculosis, etc. Blurred vision and headache: If you have normal vision and suddenly feel a loss of vision (not glasses discomfort), accompanied by eye swelling and headache, you should not be careless and should go to the hospital to check whether there are intracranial occupational lesions. Subhealth is an intermediate state between health and disease, which can be transformed into health if handled properly, but can lead to serious diseases if handled improperly. Therefore, the key to treating sub-health is early detection, early diagnosis and early treatment. The Nei Jing says: “The sage does not treat the sick to treat the unwell, but the disease has become and then the medicine, the chaos has become and then the cure, like thirst and wear a well, the bucket and cast a soldier, is not also late?” This shows that our ancestors have long recognized the importance of “preparing for the rainy days and taking precautions”. In terms of prevention, we should start from correcting the causes of the disease, from our daily life, and from our mindset, we should pay attention to our health. We should pay attention to our own health from the perspective of our minds. We should do scientific fitness, cultivation, and create a good living environment and interpersonal relationship. In other words, prevention should be done from the biological-psychological-social perspective.