Elderly people walking with weak legs may be related to physiological or pathological factors. Under the diagnosis of the doctor, the cause of the disease should be clarified and then treated. 1. Physiological factors: As the elderly age, the body functions will decline, which may lead to walking weakness, which is a normal phenomenon and does not require special treatment. 2. Pathological factors: the weakness of the elderly walking legs may be caused by pathological factors, such as lumbar spine diseases such as lumbar intervertebral disc protrusion, lumbar vertebral osteophytes, or cerebrovascular diseases such as cerebral infarction, cerebral hemorrhage, and vascular lesions of the lower limbs. Low potassium and low calcium can also cause walking weakness in the elderly. It is recommended to consult a doctor in time and treat the symptoms under the doctor’s guidance. At the same time, it is recommended that the elderly pay more attention to rest, and consult a doctor when they feel uncomfortable.