In this paper,the recent researches on neurons distribution in hypothalamus in animal were introduced.It put forward that the neurons were distributed in each nerve nucleus of hypothalamus,even several kinds of neurons simultaneously distributed in one nerve nucleus;and the neurons in supraoptic nucleus(SON),paraventricular nucleus(PVN) and arcuate nucleus(ARC) are the main nerve nucleus which were distributed in many kinds of neurons,it will provide morphological information to further study the hypothalamus physiological function.