Abstract: The pulse electric field has significant engineering applications in the regulation of fish behavior.Current researches mostly focus on the effects of pulse electric field parameters on apparent performance indicators such as fish interception rate and stun rate, while their influences on fish sensing and returning behaviors remain unclear.Based on static water tank experiments and an orthogonal experimental design, this study investigated the effects of key pulse electric field parameters including pulse voltage, pulse frequency, and duty cycle on the sensing and returning behaviors of juvenile bighead carp(Aristichthys nobilis).The results indicated that:(1) The influence of electrodynamic parameters affecting the interception efficiency of juvenile bighead carp from strong to low were pulse voltage > pulse width > pulse frequency;(2) Fish sensing distances were 40.2 to 92.2 cm and returning distances were 17.4 to 74.5 cm under experimental conditions;(3) The parameter setting of 40 V/m pulsed electric field intensity, 5 Hz pulse frequency, and 5% in that a good interception efficiency can be achieved under a medium voltage intensity condition.These findings can provide the scientific and technical basis for the basic research of fish behavior and the application of fish behavior regulation engineering.