High blood glucose may affect sleep, as evidenced by frequent night risings, excessive dreaming, insomnia, and so on. High blood glucose is caused by a variety of reasons such as heredity, obesity, diet, etc., and may present with a variety of symptoms such as weight loss, vision loss, easy hunger, fatigue, easy thirst, and excessive urination. When the patient’s blood glucose control is not particularly good, the symptoms of hunger, thirst, and excessive urination will be aggravated, which will lead to frequent night risings or unstable sleep. In addition, the patient may have psychological abnormalities such as anxiety and irritability, which will lead to insomnia, dreamy dreams, and early awakening, and will affect sleep. Therefore, high blood glucose is likely to affect sleep, and patients are advised to actively control blood glucose under the guidance of a doctor to reduce symptoms.