The present invention relates to a water dispensing device control method, which includes: a step of allowing a call word in a sound shape uttered from a user to be input into a microphone; a step of identifying the input call word in a sound identifying module and outputting guiding sound of identifying the call word through a speaker; a step of allowing the desired discharge water amount in the sound shape uttered from the user to be input into the microphone; a step of identifying the input desired water discharge amount in the sound identifying module and outputting guiding sound of identifying the water discharge amount through the speaker; a step of allowing a user to input a water discharge order; a step of allowing water discharge to be implemented while a water discharge valve is opened; and a step of allowing the water discharge to be finished while the water discharge valve is closed when the water discharge flow rate detected in a flow rate sensor reaches the input desired water discharge amount.