There are many causes of leg and foot weakness in the elderly, so it is best to choose the medication according to the cause of the disease, symptomatic treatment. If the elderly is due to calcium deficiency caused by leg and foot weakness, you can improve the examination, such as blood calcium or bone density examination, there is hypocalcemia or osteoporosis, actively carry out calcium supplementation treatment, you can eat more milk or shrimp and crab and other shelled food, or oral calcium supplements to replenish calcium. In addition, the elderly leg and foot weakness may also be caused by kidney deficiency, in this case, in addition to leg and foot weakness, often accompanied by lumbago, lumbar and knee pain and weakness and other symptoms, you can give the elderly to eat some of the kidney tonic food, such as sangma pills, six flavors of dihuang pills, or walnuts, black sesame seeds, and other nuts, but also to alleviate the patient’s symptoms of leg and foot weakness.