Just born eleven days of infants sleep a while to wake up arms moving around may be related to environmental stimuli, and may also be related to the imperfect development of the nervous system, prickly heat and other factors, according to the actual situation reasonable analysis. 1. environmental stimulation: due to the newborn baby’s skin is more tender, sensitivity is relatively high, when the sleep environment changes, it is easy to cause stimulation of the baby’s skin, making the baby’s sleep time is relatively short, waking up after the emergence of the hands and feet of the situation, the daily need to provide the baby with a safe and comfortable sleep environment. 2. imperfect development of the nervous system: due to the imperfect development of the cerebral cortex, the nervous system and the motor system of the baby, the baby’s coordination ability is relatively poor, so the sleep is relatively shallow, and the state of mind is relatively good, and then there is the case of fidgety hands and feet. 3. Prickly heat: If you don’t pay attention to the skin hygiene of infants, it will lead to the blockage of the skin glands, especially in summer or hot environment, prickly heat will appear, the baby’s skin will be itchy, red and swollen, etc., which will affect the quality of the baby’s sleep, and the itchy skin will lead to the baby’s hands and feet to move around. Therefore, when the baby wakes up after a short period of sleep, we should find out the cause and treat the symptoms to avoid causing more serious effects to the baby.