Generally speaking, leg weakness in the elderly is mainly caused by insufficient blood supply to the lower extremities due to atherosclerosis, so the most important drugs are anti-atherosclerotic drugs, including aspirin or hydroclopidogrel anti-platelet aggregation, statins to stabilize vascular plaque and drugs to activate blood stasis and dilate blood vessels, such as salvia, thromboxane and prostil. In addition, there are some other causes of lower limb weakness, such as deep vein thrombosis in the lower limbs. Such patients should take oral warfarin anticoagulation therapy, elevate the affected limbs and reduce activities. These patients should take oral medications to protect kidney function, such as urinary toxicity, Jin Shui Bao or Bai Ling capsule, and also take Chinese herbal medicines such as Ginseng and Liu Wei Di Huang Wan to tonify and refresh. There are also some patients who have weakness in the lower limbs due to anemia or malnutrition, so they can take oral ferrous succinate and blood granules to correct anemia, as well as protein powder and other drugs to improve their nutritional status.