There are many reasons for sore legs and belly, including service workers who stand for a long time, people who do not exercise for a long time and suddenly participate in competitive sports or outdoor sports such as climbing, people who have irregular diet and stay up late causing calcium deficiency, these people will have sore legs and belly. 1, for long-term long standing, especially some service industry personnel, due to continuous standing, lower limb venous return slowed down, will lead to thigh and calf belly soreness, pain, and even the possibility of varicose veins. 2, due to long-term nutritional imbalance or calcium deficiency will also cause soreness and pain in the calf belly, and even muscle spasm. 3, for a long time not exercise, suddenly a large number of rapid movement or climbing and other outdoor sports will also cause the lower limb venous blood circulation return slowed or obstructed, muscle lactic acid accumulation too much, appear calf belly soreness, and even muscle spasm may. In view of the above, it is recommended that people who are sedentary and stand for a long time should avoid a posture for a long time, and if they need to work, they can wear medical elastic stockings to slow down the progress of the disease. For the elderly or long-term nutritional deficiencies of people need to properly supplement nutrition, more calcium-rich food and oral calcium tablets, etc., will ease the symptoms of leg pain. In addition, exercise more often to enhance physical fitness, if you need to participate in competitive sports or climbing sports, do a good warm-up before exercise and appropriate nutrient supplementation, can avoid the symptoms of leg pain.