Proposed is an electronic device for controlling a hollow fiber membrane fouling reduction system including an exciter controller that generates an excitation signal, an exciter module that generates vibration corresponding to the excitation signal by being connected electrically to the exciter controller, and a hollow fiber membrane module that receives the vibration generated from the exciter module, the electronic device including a vibration analysis module that receives first and second vibration values for frequencies sensed respectively from the exciter module and the hollow fiber membrane module, calculates a vibration value transmission rate for each frequency based on the first and second vibration values, and calculates an optimal frequency at which the vibration value transmission rate is highest, and an optimal sound source selection module that receives feedback of the optimal frequency and selects an optimal sound source used to generate the excitation signal, based on the optimal frequency.