A one-year-old baby always wakes up crying many times at night while sleeping. Now we analyze the reasons from several aspects, the baby may not have enough to eat, may not add enough complementary food, simply eating milk can not meet the needs, the baby will cry more obviously at night, every time after waking up to eat milk, consider not enough to eat, the principle of handling is to start by adding complementary food, in addition to the appropriate increase of formula to deal with. If the baby wakes up several times at night and has no other symptoms of discomfort, the possibility of not having enough to eat is also ruled out. If the baby has been supplemented with vitamin AD, which promotes calcium absorption, and the baby still has night sweats and wakes up more often at night, then calcium deficiency should be considered, which means that the baby’s calcium intake is not enough, and exogenous calcium needs to be supplemented. You can also use the calcium gluconate oral solution, which contains 100mg of calcium.