From 2017 to 2018, through intensive adaptive cultivation, water flow stimulation, and water temperature control, the laws of spawning and fertilization of Alosa sapidissima broodstock cultured in earthen ponds were observed and studied. The results showed:The first sexual maturity age of male and female A. sapidissima broodstocks was 2 years, and the breeding season lasted from May to July; The survival rate of intensive adaptive cultivation of A. sapidissima broodstocks was 69.4%-92.9%, prenatal females(ovaryⅤ stage):body length was (34.62±2.90) cm, body weight was (844.11±134.78) g, the condition factor was 2.07%±0.42%, the average weight of ovary was (232.22±73.42) g, the ovary gonadosomatic index (GSI) was 27.59%±6.47% (17.39%-35.20%), the quantity and weight of free eggs in ovarian cavity were (32.26±27.34) thousand and (114.83±73.42) g, respectively. In 2017 and 2018, the spawning period of female lasted 35 d (from May 17 to June 21) and 89 d (from May 4 to July 31), spawning egg amount were 2 779.6 thousand and 4 714.8 thousand, daily spawning egg amount were 81.8 thousand and 53.0 thousand, fertilized egg amount were 185.8 thousand and 744.7 thousand, the average fertility rates were 6.68% and 15.80%, respectively. There were three stages in spawning of A. sapidissima in 2018:spawning steady stage (0-10 day and 30-60 days), spawning peak stage(10-20 days), and spawning stagnation stage (70-90 days). As time (ten-day) goes on, the ten-day average of the daily spawning egg amount presented earlier-increase and later-decrease trend, the ten-day average of fertility rate presented significant bimodal fluctuation trend, and the ten-day average of the daily fertilized egg amount presented weak bimodal fluctuation trend. On the whole, as time (day) goes on, the daily spawning egg amount, the average fertility rate, and the daily fertilized egg amount showed the parabola of the quadratic function with vertices and openings downwards(P<0.01). The suitable water temperature of mating and spawning of A. sapidissima broodstock is 16-20℃; High nutritive value feed is fed during mating and spawning periods; After broodstock laid eggs for 60 days, the spawning regulation ended.