When patients have generalized weakness symptoms, they can hang up endocrinology, psychiatry, cardiology and so on, and the specific need to be based on the causes of weakness for sub-specialty judgment. 1. Endocrinology: Thyroid hormone can increase the excitability of the nervous system, promote respiration, accelerate the heart rate and increase the volume of blood return to the heart to maintain the vitality of the body. When the thyroid gland is hypothyroid, the secretion and synthesis of thyroxine will be reduced, which will make the patient’s nervous system less excitable and cause generalized weakness. At this time, you can hang endocrinology. 2. Psychiatry: neurasthenia, when the patient due to work or study pressure, long-term in a tense mental state, can not guarantee sufficient sleep and rest, may lead to neurasthenia. When the patient’s energy is not restored, it will show weakness and lack of spirit. At this time you can hang psychiatry. 3. Cardiology: the diastolic and systolic function of the heart will decline after heart failure, resulting in insufficient ejection capacity of the heart and the body’s effective circulating blood volume is reduced, resulting in general weakness. At this time, you can hang up the cardiology department. In addition, malignant tumors, diabetes and other chronic wasting diseases can also cause the symptoms of general weakness, and it is recommended that the patient go to the hospital in a timely manner in order to clarify the specific causes of the disease, so as to avoid delays in the condition.