Diabetic leg weakness may be the occurrence of diabetic peripheral neuropathy, diabetic lower extremity vasculopathy, etc. The specific causes and treatment are as follows: 1. Diabetic peripheral neuropathy: diabetic peripheral neuropathy is a common complication of diabetes mellitus, which requires active control of blood glucose, dietary restriction of the intake of high-sugar foods, choosing low-sugar foods, and appropriate exercise after meals. Patients also need to take hypoglycemic drugs or insulin injection under the guidance of the doctor to treat. During the period can also take methylcobalamin and other nutritive nerve drugs. 2. Diabetic vasculopathy: patients with diabetes, may be due to long-term high blood sugar caused by lower limb blood vessels appear hardening, narrowing, manifested as weakness of the legs, etc., at this time the patient needs to actively control blood glucose, take glucose-lowering drugs or insulin injection as prescribed by the doctor, but also follow the prescription of the application of prostaglandin and other drugs to improve circulation. At the same time, you can also control blood sugar through diet and exercise. For diabetic leg weakness patients, should consult a doctor in time, under the guidance of the doctor to choose the appropriate way of treatment.