Adult calf cramps mainly refer to muscle spasms in the calves of adults, the common causes are the following: 1, due to chronic strain or acute injury to the calf muscles resulting in local congestion, edema, affecting blood circulation resulting in inadequate arterial blood supply, venous blood return obstruction, local anaerobic metabolism increases resulting in the accumulation of metabolites, stimulation of muscle spasms, that is, muscle dysfunction. 2, can be seen in lumbar spine disease, adults due to daily work or with the increase in age caused by lumbar spine injury or degeneration, resulting in lumbar spine disease resulting in lower limb nerve root compression, thus affecting the function of the calf muscles resulting in dysfunctional cramps. 3, seen in adverse factors caused by stimulation, such as cold, moisture and adverse physical and chemical environment can also cause calf 4, can be seen in the systemic underlying diseases, such as kidney function abnormalities can lead to calcium and phosphorus metabolic disorders, muscle dysfunction due to changes in the internal environment, resulting in calf cramps.