The embryonic developments of Rhinogobius cliffordpopei were observed,and the morphological features and times of the development phases were discribed in detail in this paper.Under the water temperature 23.7~26.1℃,it took 59 hours and 28 minutes from fertilization to hatching with the cumulative temperature of 1480.7℃.The embryonic development process could be divided into 6 stages,including fertilized egg stage,cell division stage,blastula stage,gastrula stage,neurula stage and organ formation stage,and contained 33 developing phases as other teleost.The rate of hatching was about 50%.The mean length of newly hatched larva was 3.61 mm.