Sleeping at night with sleepy legs may be low blood calcium, when the blood calcium is lowered, the patient may have leg cramps, or there may be soreness and discomfort in the leg muscles, low blood calcium in the elderly may also have osteoporosis, which can easily cause bone fractures, the blood calcium should be measured, and calcium supplementation treatment should be carried out when it is lowered, which can be calcium gluconate orally, or calcium gluconate intravenously pushed in case of seriousness to correct it quickly, and at the same time, vitamin D should be orally taken to promote the Vitamin D should also be taken orally to promote the absorption of calcium, and more sunshine can also promote the absorption of calcium. If it is caused by low blood calcium, the symptoms may be relieved when the blood calcium is replenished. It may also be a kind of restless legs syndrome, which is mainly manifested in the patient’s sleep or quiet state feeling the legs, or the upper limbs appear unnameable discomfort, including ants walking sensation, swelling sensation, which may affect the patient’s sleep, and can be applied some benzodiazepines for treatment, and can be orally administered with clonazepam and so on.