s: The yield increasing of grain production is closely associated with the application of herbicide , during which, inevitably, environment is polluted and the organism is threaten.A semi static method was used to determinate the acute toxicity of 10% quizalofop-p-ethyl by employing Zebrafishs as experimental fish. The Zebrafishs were exposed to quizalofop-p-ethyl with different concentrations and the high performance liquid chromatography was utilized to detect the actual concentrations of quizalofop-p-ethyl in water after 0 h, 24 h, 48 h, 72 h and 96 h. The results showed the number of death...