Insomnia and sweating at night may be autonomic dysfunction, hypoglycemia, hyperthyroidism, which need to be analyzed specifically. 1. autonomic dysfunction: autonomic dysfunction will appear at night insomnia, sweating performance, can also be accompanied by numbness of the skin, hands and feet heart fever and other symptoms, is the sympathetic and parasympathetic constraints between the imbalance of the body dysfunction, can be through the scale of the work and rest, relaxation and so on to alleviate the situation. 2. Hypoglycemia: Insomnia and sweating may occur at night when there is hypoglycemia, accompanied by palpitations, hunger and pallor, which can be relieved by drinking sugar water and eating. 3. hyperthyroidism: hyperthyroidism timing body thyroid hormone levels increase, the basic metabolism accelerated, there will be insomnia, sweating, can also be accompanied by palpitations, hand tremors and other symptoms. There are many reasons for insomnia and sweating at night, and it is recommended to consult a doctor in time to avoid delays.