For investigating the effects of suspended solids content in water on the development of zebrafish (Danio rerio) embryos, the normally developing embryos were selected and placed in water with suspended solids mass concentrations of 0, 10, 100, and 1 000 mg·L -1 for 168 hours (h), and were named CK group, T1 group, T2 group and T3 group, respectively. During this period, hatching rate of embryos and mortality of embryos or larvae were calculated every 12 h, the heart rate and deformity rate of larvae were recorded after 72 and 168 h of the treatment, and the development of 〖JP〗embryos were photographed after 4, 12,〖JP〗 24， and 48 h of the treatment. The results showed that: 1) Compared with the CK group, the cumulative hatching rate of embryos in T1 group, T2 group and T3 group decreased statistically after 60 h of the treatment, and this indicator was reduced obviously in the T3 group after 72 h of the treatment until the end of the experiment (p<0.05); 2) After 120 h of the treatment until the end of the experiment, the cumulative mortality rate of larvae in the T3 group had statistically increased compared with CK group (p<0.05); 3) There was a statistically significant decrease in heart rate of larva after 72 h of the experiment in groups T1, T2 and T3 compared with group CK (p<0.05); 4) Compared with the CK group, the deformity rate of larvae in the T3 group increased statistically (p<0.05); 5) Compared with the CK group, embryos in T1, T2 and T3 groups were delayed in development. The results indicate that the high mass concentration of suspended solids can lead to delayed development of zebrafish embryos, decreased hatching rate of embryos and heart rate of larvae, and increased mortality and deformity rates of larvae.