The sleep time of infants and toddlers is relatively long, within a month of the newborn, his sleep time in about 22 hours, a month to about three months of the baby, sleep time in about 16 to 18 hours, so as the child grows, sleep time will become shorter and shorter, … adequate sleep is conducive to the growth and development of children. Babies and toddlers can get up on time to eat and sleep for a long time is not much of a problem and belongs to a normal physiological category. The child in the process of growth and development will have a surge phase, during this period the child will sleep more, but also relatively more food, this time will last 2 to 3 days, so the mother does not need special treatment. If the previous sleep time is particularly low, and the sudden appearance of a longer sleep time is considered narcolepsy, it is time to consider whether there is a bacterial-viral infection and pay attention to prevent the occurrence of encephalitis. Therefore, the length of sleep should be compared with the child’s usual sleep habits, if it is longer than usual, consider it a pathological disease, if the child has always been in this form of expression, growth and development are not affected, this is not much of a problem.