Sweating, body weakness common causes are as follows: 1, hypoglycemia, often appear in poor eating, or for some reason a longer period of time did not eat the patient, but also common in patients with diabetes, long-term oral hypoglycemic drugs, hypoglycemic drugs, too large a dose of drugs or too many times the number of drugs led to drug hypoglycemia, can appear weak, sweating, pale, dizziness, etc. 2, need to except hypokalemia, low sodium, hypochlorhydria and other plasma disorders, once vomiting, diarrhea, sweating, intake factors such as low sodium, hypochlorhydria and even hypochlorhydria. 2, need to exclude hypokalemia, hyponatremia, hypochloremia and other plasma disorders, once vomiting, diarrhea, sweating, poor feeding and other intake factors, can cause hyponatremia, hypochloremia and even hypokalemia, there can be weakness, sweating, improve the blood ionization test, can be a clear diagnosis. 3, in addition, if the sweating is accompanied by precordial discomfort, palpitations, panic, etc., then it is likely that acute ischemic coronary artery disease is the cause of sweating, the heart is not in a stable state. It may be acute ischemic coronary heart disease, angina attack, need to improve the electrocardiogram, 4, in addition, if the sweating, weakness is accompanied by dizziness, nausea, vomiting symptoms, may be caused by vertigo, need to improve the brain CT, except acute cerebrovascular disease.