The reasons why children always sleep uneasily at night mainly include vitamin D deficiency rickets and abdominal pain, as follows: 1, vitamin D deficiency rickets: the most common cause of this situation, the child’s development is very rapid, supplemental vitamin D or sun exposure is insufficient, can cause vitamin D deficiency rickets, need to apply vitamin AD drops in time to alleviate the problem; 2, abdominal pain: if the abdominal pain is very painful and the pain is aggravated during sleep at night, at this time the child will be tossing and turning, crying, restlessness and restlessness to sleep, can be applied to regulate the probiotics.