If the frequency is not very high, don’t bother, because children have a problem, is the more attention, the more he appears this kind of thing, there are times when he may be doing this kind of bad behavior is also to cause the parents attention. This child is hungry and sleepy, may have some physiological needs when hungry, in fact, when you prepare some milk or food for him, you can maintain verbal communication with him, for example, put your voice long, say baby, wait a little longer, mommy will be here in a minute, 12345, can be used in a mathematical way, but also let him learn math, so that he learns to wait, and learn to delayed gratification is also very important! . And sleepy, he may be in need of a kind of soothing, this time if the mother or other nannies, you can pat him or so hold in the arms of a shake, this is perfectly fine, there may be parents are worried that if I shake a long time, will not develop a habit? I think generally will not, you see rarely say an elementary school student still let parents go to rocking to sleep, with his age is very much related to the parents do not begrudge this kind of caress, this kind of care, you can pat him, whisper to him, sing to him, so that his attention will be shifted, and may be on the pacifier need will be reduced.