There are many causes of fatigue, the most common of which are caused by factors such as lack of sleep, lack of nutritional supplements and excessive exercise. If these factors exist, it is recommended to first regulate them by living a regular life, ensuring sufficient sleep, exercising appropriately and strengthening nutrition, etc. If none of these factors exist or the symptoms of fatigue are not relieved through a period of life regulation, it is necessary to consider the possibility of suffering from chronic fatigue syndrome, depression, neurasthenia, anaemia, tuberculosis, endocrine system diseases, malignant tumours and other diseases, and it is necessary to seek medical consultation at a hospital.