Infants sleep vigorously stirrups generally belong to a normal physiological phenomenon, may be due to gastrointestinal discomfort and environmental impact. 1. Normal phenomenon: the infant’s central nervous system development is not particularly mature, which may lead to higher cortical excitability, so there will be limb activity, is manifested in stirring the legs, and also in the sleep will stretch, so there will be the phenomenon of stirring the legs. 2. Gastrointestinal discomfort: if there is food accumulation, it may cause abdominal distension or abdominal pain, which may cause discomfort, so there will be stirrups when sleeping. 3. Environmental influences: If the light in the room is too bright or the surrounding environment is noisy during sleep, it will affect the sleep, thus the stirrups will occur. If you find that infants stirring their legs more frequently or affecting the quality of sleep, you should also be alert to epilepsy and other conditions, and go to the hospital for examination as soon as possible.