The invention discloses an acousto-optoelectronic comprehensive fish-dispelling instrument, which relates to an acousto-optoelectronic comprehensive instrument that is used for dispelling fish, and is characterized in that the output voltage value of the direct current power supply of the instrument is less than or equal to 24V; the input terminal of a first pulse generator is electrically connected with the direct current power supply, and the output terminal of the first pulse generator outputs a pulse with a voltage value less than or equal to 24V; the input terminal of a pulse booster is electrically connected with the output terminal of the first pulse generator, the output terminal of the pulse booster outputs a pulse with the voltage value more than or equal to 100V, an underwater electrode comprises two beam electrode long lines, the input terminal of a second pulse generator is electrically connected with the direct current power supply, while the output terminal of the second pulse generator outputs a pulse with the voltage value less than or equal to 24V; a flash generator comprises a transparent casing and a luminescent lamp, the input terminal of a terrifying sound generator is connected with the direct current power supply, while the output terminal of the terrifying sound generator outputs prerecorded cry sound signals sent out by various fishes when being electrically shocked; an underwater speaker is used for displaying the cry sound signals which are sent out by the fishes when being electrically shocked and are output by the terrifying sound generator; and the underwater electrode, the underwater speaker, and the flash generator are respectively and fixedly connected with the bottom of a fishing net.