Elderly leg weakness is considered to be caused by a variety of causes, such as cerebrovascular lesions, lumbar spine lesions, bony joint lesions, etc., should be examined in a regular hospital to find the specific cause of the disease, and timely drug treatment, if necessary, consider surgical treatment. 1. Cerebrovascular lesions: If the elderly have cerebrovascular lesions such as cerebral infarction and cerebral hemorrhage, which are mainly manifested as weakness on one side of the leg, they should cooperate with the doctor to apply drugs to improve brain metabolism, such as clopidogrel, edaravone, etc., after the diagnosis is clear. 2. Lumbar spine lesions: If the elderly suffer from lumbar disc herniation, spinal stenosis, etc., which presses on the lumbar nerves and leads to nerve damage, causing weakness and weakness of the legs, they should take drugs to nourish the nerves according to the doctor’s instructions, such as methylcobalamin and vitamin B12, etc. 3. Osteoarthritis: If the elderly have degenerative osteoarthritis, meniscus injury, etc., resulting in leg weakness, you can take medication under the guidance of a doctor, such as glucosamine hydrochloride, celecoxib, nimesulide, etc., and if necessary, consider joint replacement surgery. For the elderly leg weakness, it is recommended to go to the regular hospital as soon as possible for examination, to find the cause, and take appropriate treatment in time.