Symptoms of diabetic peripheral neuropathy include distal limb neuropathy, focal neuropathy, autonomic neuropathy and so on. 1. Distal limb neuropathy: mainly manifested as numbness, tingling, ants sensation and other sensory abnormalities in the limbs, mostly glove or sock-like distribution, the lower limbs before the upper limbs, symmetrical appearance, and aggravated at night or during the cold season. 2. Focal neuropathy: facial paralysis may occur when intracranial nerves such as facial nerve and trigeminal nerve are involved, or muscle atrophy and loss of nerve reflexes such as ankle reflex and tendon reflex may occur when motor nerves are involved. 3. Autonomic neuropathy: symptoms vary according to the system involved. (1) Cardiovascular system: abnormal blood pressure regulation, tachycardia, postural hypotension, dizziness and weakness. (2) Digestive system: gastroparesis such as early satiety, loss of appetite, vomiting, etc., as well as dysphagia and diarrhea. (3) Reproductive system: bladder dysfunction such as increased nocturia, urinary retention, etc. Erectile dysfunction and loss of libido can be seen in men, and pain during sexual intercourse and loss of libido can be seen in women. Diabetes mellitus should be controlled by blood sugar, and if peripheral neuropathy occurs, it should be treated in the hospital as early as possible by the doctor according to the situation, so as to avoid the progress of the disease.