The patient appears to have the feeling of twitching when sleeping, resulting in the following reasons: 1, the first consideration is caused by tension, because tension, will make the quality of sleep decline, long-term in a state of tension, the leg is easy to appear protruding performance. 2, of course, should also consider calcium deficiency caused by, and cold stimulation caused by the spastic state of the lower limbs, are likely to lead to the performance of lower limb twitching. 3, of course Lumbar spine disease is also to be considered, leading to the generation of convulsions. Therefore, it is very crucial to give patients further examination to determine the cause, such as neurology examination, etc. Pay attention to the warmth of the convulsion site, because cold stimulation is easy to induce convulsions, and moderate exercise do not over fatigue, fatigue is also likely to lead to the occurrence of convulsions, and according to the results of the examination to develop effective treatment measures.