Clinically some diabetic patients can have symptoms of insomnia, the common clinical causes are as follows: 1. Diabetic patients with combined diabetic peripheral neuropathy, patients show symptoms such as numbness, pins and needles-like pain, burning sensation, ankle sensation in both feet, and the symptoms often worsen at night, which can affect the patient’s sleep. 2. Diabetic patients with combined lower limb atherosclerosis occlusion, causing impaired blood supply to the lower limbs, which can lead to 3. Diabetic patients with combined autonomic neuropathy are often accompanied by abnormal sweating and nighttime irritability, which can affect the sleep of patients. For diabetic patients with symptoms of insomnia, psychological guidance should be given, along with active cause-specific treatment.