Numbness of feet in diabetes mellitus may be caused by diabetic peripheral neuropathy, cervical spondylosis, cerebrovascular disease, etc. It is recommended to consult a doctor in time, and actively treat the cause of the disease after clarifying it. 1. Diabetic peripheral neuropathy: If diabetic patients have long-term poor glycemic control, resulting in diabetic peripheral neuropathy, which affects the peripheral nerves and blood vessels, it will lead to numbness in the feet. 2. Cervical spondylosis and lumbar spondylosis: if diabetic patients combined with cervical spondylosis or lumbar disc herniation, compression of the nerves, which will also lead to numbness of the feet. 3. Cerebrovascular disease: If diabetic patients are combined with cerebrovascular disease, such as insufficient blood supply to the brain, stroke and other diseases, patients may also experience numbness in the feet. It is recommended that diabetic patients with numbness of the feet go to the hospital in time to avoid delaying their condition.