Numbness on the soles of the feet in diabetes mellitus is usually related to diabetic peripheral neuropathy, combined with lumbar disc herniation and other factors, which can be treated with general treatment, medication and surgery according to the cause to control the progress of the disease. 1. Diabetic peripheral neuropathy: it is a complication of diabetes mellitus, which may cause numbness, pain and other symptoms when the peripheral nerves become diseased due to the continuous increase of blood sugar. 2. Combined lumbar disc herniation: some diabetic patients combined with lumbar disc herniation, when the condition is serious, compression of the peripheral nerves, which will cause numbness on the soles of the feet. Diabetic patients with severe symptoms of numbness on the soles of the feet are recommended to consult a doctor to determine the cause of the disease under the guidance of the doctor, and then take targeted treatment according to the cause of the disease.