Provided is a system for controlling a fishing light, capable of easily executing accurate sequential turning-on or turning-off even if the number of lights is largely increased, and precisely and easily controlling turning-on or turning-off intervals. The system for controlling the fishing light has a computer control unit which controls the turning-on or turning-off of the fishing lights which are installed in a plurality of poles which protrude from the sides of a ship and are arranged around the ship. The computer control unit comprises: an input unit; and a turning-on or turning-off indicating unit. The input unit executes an input of designating a pole of a fishing light which starts the turning-on or turning-off by using a pole number which is previously set in response to the poles, and executes the input of designating the pole of the fishing light which terminates the turning-on or turning-off by using the pole number. The turning-on or turning-off indicating unit automatically instructs the sequential turning-on or turning-off from the fishing light of an inputted starting pole number to the fishing light of an inputted terminating pole number when an operation starting instruction exists.