Causes of foot cramps include excessive exercise and exposure to cold, calcium deficiency, varicose veins of the lower extremities, etc. 1. Excessive exercise and exposure to cold: such as long-distance running, mountain climbing, excessive physical labor, or working and living environments that are humid and cold, etc., may cause cramps on the soles of the feet due to poor local blood circulation. You should combine work and rest, avoid excessive exercise, and pay attention to keeping warm. Generally no treatment is needed. Those who are not relieved can take acupuncture, massage and so on. 2. Calcium deficiency: Due to the decrease of calcium ions, it will cause the muscle muscle tension to increase, and cause cramps. The symptoms can be relieved by supplementing calcium ions such as calcium carbonate D3. 3. Varicose veins of the lower limbs: The above symptoms can also be caused by impaired blood return. Treatment includes wearing compression stockings, applying sclerosing agents, venous active drugs (e.g. ethoxyflavone) and other drugs, and surgery if necessary. In addition to the above causes, vasculitis of the lower limbs and vascular embolism can also cause the above symptoms. If the above symptoms are not relieved, the patient should go to the hospital in time to have the cause clarified and receive targeted treatment. The above medications should be used under the guidance of a pharmacist or doctor to avoid blind use of medication.