The most common cause of cramps in the elderly is the lack of calcium, which is directly related to osteoporosis. This is a direct relationship with the excessive secretion of lactic acid during exercise and transient muscle dehydration. 3, also seen in people with a history of disc herniation, these patients are often accompanied by numbness and radiating pain in the innervation area due to the compression of the nerve roots by the herniated disc, these patients will have clinical symptoms of leg cramps after getting cold, and the disc herniation will be clear during the relevant imaging examination. Some elderly people may have arterial occlusive sclerosis of the lower extremities due to their advanced age, and the diagnosis can be clarified by performing ultrasound of both lower extremities.