Abstract:The present paper deals with the toxic effects of Cu2+,Zn2+,Cd2+ in different ion concentration and the joint toxicity of Cu2+-Cd2+ and Pb2+-Zn2+ on the embryos development of Spinibarbus hollandi by using the semi-static test method,under the condition of water temperature between 24-26℃.The result suggests that the hatching rate of embryos incubated at the heavy metal solutions of different concentration is lower than the control,and the differences is extreme significant(P<0.01).Malformation of embryos was caused by the heavy metal element during the embryos development stage.The development speed of embryo was advanced in the experimental groups(Cu2+≥0.10 mg/L,Cu2+-Cd2+≥0.50 mg/L,Pb2+-Zn2+≥2.00 mg/L),but reduced in the rest of experimental groups of various concentration of metal solutions.The toxic effects of the heavy metals on the embryos development of S.hollandi are Cu2+>Cd2+>Zn2+.The safe concentration of Cu2+,Cd2+,Zn2+,Cu2+-Cd2+,Pb2+-Zn2+ are 0.009 mg/L,0.065 mg/L,0.023 mg/L,0.011 mg/L,0.523 mg/L respectively.The joint toxicity of Cu2+ and Cd2+ to the S.hollandi is antagonistic.