Calf suffocation can be caused by physiological soreness caused by excessive exercise, but also by leg trauma, muscle strain, lumbar spine disease, vascular disease and other diseases. 1. Excessive exercise: Excessive exercise or exertion of the lower limbs can cause accumulation of lactic acid in the calf muscles, resulting in physiological soreness and swelling, which is generally relieved after rest. 2. Trauma to the leg: Trauma can cause damage to the bone and soft tissues of the leg, which can cause edema, bruising, swelling, pain and other uncomfortable symptoms in the calf area. 3. Muscle strain: long-term hiking, running and other leg activities can trigger calf muscle strain, local aseptic inflammation can occur, in the exertion or cold and other factors, can lead to calf swelling performance. 4. Lumbar spine diseases: lumbar spine diseases such as lumbar disc herniation and lumbar spinal stenosis can lead to nerve root compression, which in turn can make the innervated area of the calf and other discomfort symptoms such as swelling and numbness. 5. Vascular diseases: segmental arterial occlusion, atherosclerosis, vasculitis and other vascular diseases can lead to ischemia of blood vessels in the calf, resulting in blocked blood circulation of the local muscles and slow metabolism, which can lead to coldness, bloating, numbness and other symptoms in the calf. There are other causes of calf swelling, if rest does not relieve, should promptly consult a doctor, improve the examination to clarify the cause of the disease, under the guidance of specialists to carry out appropriate treatment, which will help to alleviate the symptoms of calf swelling and other discomforts as soon as possible.