Diabetic blood sugar down but cold fingers also pain to consider may be the occurrence of diabetic peripheral neuropathy, diabetic peripheral vasculopathy and other diseases caused. 1. Diabetic peripheral neuropathy: long-term poor blood sugar control may cause diabetic peripheral neuropathy, abnormal sensations, such as numbness, cold, burning sensation, etc., can also be accompanied by symptoms of pain. 2. Diabetic peripheral vasculopathy: When diabetic patients develop peripheral vasculopathy, it may cause blood vessel narrowing and blockage, resulting in symptoms such as coldness, decreased skin temperature and pain in the affected limbs. Diabetic patients with symptoms of cold fingers and pain even though their blood glucose has been lowered should go to the hospital and ask the doctor to make a judgment.