Running calf pain may be caused by muscle strain, overwork, lack of calcium and other reasons. 1. Muscle strain: most of them are because the warm-up exercise before running is not enough, or the running time is too long, as well as the sports posture is not correct, resulting in muscle strain in the calf area, which will cause running calf pain. 2. Excessive exertion: Mostly because the running time is too long, beyond the body’s load, the body’s anaerobic metabolites accumulate in the calf, which will cause running calf pain. Generally, we should pay attention to rest, and try to run as little as possible in a short period of time, in order to prevent the pain from worsening in the process of exercise, and at the same time, we can also gently rub the legs with our hands to promote blood circulation and improve the pain. 3. Calcium deficiency: running calf muscle cramps and soreness, sometimes with a great relationship with calcium deficiency, usually can be appropriate calcium supplements. If it is difficult to relieve, it is recommended to consult a doctor in time. If it is due to calcium deficiency, usually eat more calcium-rich food and sunshine.