There are many causes of cramps on the outside of the calf, and you need to decide how to deal with them according to the specific cause. i. Excessive cold causes strong contraction spasms of the muscles, which can cause cramps in the calf. ii. In this case, you should pay attention to the cold to keep warm, stay indoors, and cover the back of the foot with a good blanket when you sleep at night. Calcium deficiency, especially in elderly female patients, due to the decline of estrogen, osteoporosis, more likely to cause calcium deficiency. In this case, you should eat more calcium-containing foods in your daily life, such as milk, lean meat, eggs, shrimp, etc. You can take calcium gluconate and calcium tablets orally to alleviate the symptoms, and in case of emergency, you can also inject calcium gluconate into the vein. Third, other situations. For example, fatigue, too much exercise, too much sweating, and too much rest can also cause muscle spasms, causing cramps in the calves. In this case, first of all, you should pay attention to rest, avoid excessive sweating, and timely hydration. The accumulation of lactic acid caused by too much rest can be relieved by appropriate exercise. Fourth, for the elderly, if the combination of hypertension, hyperlipidemia, hyperglycemia, as well as lower extremity atherosclerosis patients, should also consider the lower extremity occlusive atherosclerosis. In this case, first of all should pay attention to rest, avoid smoking, pay attention to warmth, and actively control blood pressure, blood sugar, blood fat, if necessary, can also consider giving the application of antispasmodic and vasodilatory drugs.